compared anal advance-ment flap to lateral internal sphincterotomy for the treatadvance-ment of chronic anal fissure.106 More patients healed with sphinc-terotomy 100% compared to anal a
Trang 1limited versus full internal sphincterotomy In one study, early
incontinence in patients undergoing full sphincterotomy (10.9%)
was increased compared to patients who underwent limited
sphinc-terotomy (2.2%, p = 0.039) (91) However, this difference did not
persist with long-term follow-up with only 2 patients who
under-went full sphincterotomy reporting persistent incontinence In the
other study, there was no significant difference in posttreatment
and baseline incontinence scores between the two types of
sphinc-terotomy.(92) Overall, internal sphincterotomy up to the dentate
line has been shown to produce faster healing and pain relief but is
associated with increased rates of early incontinence compared to
sphincterotomy to the fissure apex
Given the significant variation in incontinence rates after
sphinc-terotomy, several investigators have sought to further characterize
incontinence in patients with chronic anal fissure with respect to
type, frequency, and permanence In a study of preoperative and
postoperative incontinence in 126 patients with chronic anal fissure,
Anmari and colleagues found that 28% of patients had minor
preoperative disturbances in continence that persisted
postopera-tively.(93) Casillas and colleagues found that patients endorsed a
higher rate of incontinence in response to a questionnaire than was
recorded in their medical record or was reported in a telephone
survey.(94) In other studies, risk factors for incontinence were
identified.(95–96) These include preexisting sphincter injuries, IAS
division >50%, injury to external anal sphincter during the
proce-dure, functional impairment with age, shorter sphincter in females,
and posterior keyhole deformity While external anal sphincter
injury during anal stretch and a posterior keyhole deformity after
posterior sphincterotomy clearly result in higher rates and more
severe forms of incontinence, the presence of other risk factors in
patients who are undergoing lateral internal sphincterotomy result
in lower rates of minor incontinence which are frequently
tempo-rary In fact, some incontinence scales are so sensitive to changes
in continence, that one study identified no impairment in quality
of life despite decreases in continence scores.(97) Overall,
inconti-nence after sphincterotomy remains a real complication that must
be considered in patients at higher risk (female, older age, previous
anorectal surgery) with subsequent modification of the surgical
procedure if necessary
Refractory fissures
Several recent studies have been performed to identify
character-istics associated with fissure persistence despite treatment In one
study the etiologic and manometric differences between anterior
and posterior anal fissures which failed to heal with nitrate therapy
were examined When comparing patients with both anterior and
posterior fissure who failed medical therapy, Jenkins and colleagues
found that anterior fissures were more common in younger women
(33 years vs 44) and were more likely to be associated with obstetric
trauma and an occult external anal sphincter defect.(98) Patients
with anterior fissure were also more likely to have normal or low
anal resting pressures compared to controls This was significantly
different from the elevated resting pressures measured in patients
with posterior fissure In addition, the maximum squeeze pressure
was significantly lower than normal controls and patients with
posterior fissure Corby and colleagues also found that postpartum
females have lower anal resting pressure and squeeze pressures than
they did antepartum.(99) Thus, postpartum females who develop anal fissure (9% incidence) have reduced anal canal resting pres-sure and treatments to decrease internal sphincter tone can lead to incontinence
Other investigators have sought to identify medical therapy that can act as rescue treatments for patients with persistent anal fissure before a surgical treatment is undertaken In one study 2% diltiazem ointment was used for treatment of chronic anal fissure refractory to GTN.(100) Fissure healing occurred in 49% of patients with no recurrence over 8 weeks of follow-up Healing was not dependent on whether a full course of GTN was completed with fissure persistence or GTN treatment was discon-tinued secondary to adverse side-effects In two other studies BT was used to treat nitrate resistant fissures (GTN and ISDN) (101, 102) Forty-three to 50% of patients with nitrate resistant fissures achieved healing with BT treatment Patients with nitrate resistant fissures have also been randomized to another course of nitrates
or nitrates plus BT.(103, 104) More patients healed their fissures with a combination of BT and nitrates (47–67%) compared to
BT alone (20–27%) More studies are needed to determine the optimal treatment for refractory or persistent fissures
Alternative surgical therapies are available for chronic anal fis-sure associated with low anal resting presfis-sure or for those that persistent after surgical sphincterotomy These include island advancement flaps Nyam and colleagues described advancement flaps in a series of patients with low anal resting pressure and maximum squeeze pressure.(105) Some patients had external sphincter defects and others had previous fissure surgery Patients underwent fissurectomy with flap coverage by perianal skin All 20 patients healed with one contracture at the donor site and mini-mal donor site discomfort Leong et al compared anal advance-ment flap to lateral internal sphincterotomy for the treatadvance-ment
of chronic anal fissure.(106) More patients healed with sphinc-terotomy (100%) compared to anal advancement flap (85%)
A number of flaps, such a V-Y anoplasty, have been described for chronic anal fissure with good success (Figure 20.2) A key to reduc-ing complications with flap closure is careful hemostasis, which reduces the risk of hematoma formation, flap loss, and infection Design of the flap with good length-to-width ratio is important
to ensure adequate vascularity and minimal tension (107) Anal advancement flaps remain an important surgical alternative for patients with low pressure fissures and persistent fissure despite previous anorectal surgery
CoMPliCationS oF Surgery For anal StenoSiS
Acquircd anal stenosis can be a late sequela of a variety of anorectal surgical procedures It has been reported to occur after
5 to 10% of radical hemorrhoidectomies and after fissurectomy, radiation injury, and Moh’s chemosurgery.(108, 109) The cause
of these strictures is excessive removal of the anodermal lining
of the anal canal: and thus is generally preventable In cases of severe, symptomatic anal stenosis, a variety of flaps can be used
to resurface the anal canal and expand its circumference The key to success with any of these flaps is that they be carefully designed to maintain vascularity and that subflap hematoma formation is averted to minimize the risk for infection and flap necrosis
Trang 2Patients should undergo complete mechanical and antibiotic
bowel preparation before surgery After surgery, bowel
activ-ity may be restricted with a clear liquid diet for a day or two
After this period, patients are allowed a regular diet and given
fiber supplements and laxatives to avert constipation One final,
important point is the limitation of patient activity for several
weeks so that flap motion is minimal, to allow neovascularity
to occur
Anal S-plasty (Figure 20.3) was first proposed by Ferguson
(110) as a method to correct Whitehead deformities in 13
patients Later Corman et al (111) modified the procedure for
use in the management of anal stenosis The key to the success of
this approach is development of ’ large, full-thickness skin flaps
with a base-to-length ratio >1.0 Ferguson recommended a base
of 7 to 10 cm and maintenance of a thin layer of fat globules on
the deep aspect of the flap so that adequate vascularity can be
ensured He further cautioned against overzealous hemostasis on
the flap itself so as not to impair blood flow The flaps are then
rotated toward the anal canal so that the anodermal defect can
be resurfaced The flaps are sutured in place, and the remaining
semilunar defect is sutured to allow its primary healing It is wise
to use a closed suction drain beneath the flap to avert seroma or hematoma formation
For less severe anal strictures that require less skin coverage, the
Y-V anoplasty, is an excellent alternative because it is simple to
per-form and is less traumatic for the patient This technique was ini-tially described by Penn (112) in 1948 Again, successfu1 healing of the flap requires a length-to-base ration <3.0 Gingola and Arvanitis (113) presented a series of 14 patients Thirteen healed within 14 days with no episodes of infection or hematoma formation Five patients sloughed a small portion of the flap tip but required no additional treatment Experiences reported by other authors sup-port the low rate (10 to 25%) of tip necrosis and the high rate (85
to 92%) of stenosis relief associated with this technique (114, 115)
It must be remembered, however that Y-V advancement flaps limit how much anal resurfacing can be accomplished
Other uses for the Y-V advancement flap have been advo-cated Rosen (116) used it to treat anal stcnosis and ectropion (Figure 20.4).The blood supply for this flap is based on perfo-rating vessels in the subcutaneous fat The Y-V advancemcnt flap is well suited for covering the lower anal canal but has lim-ited application for stenosis above the dentate line
Figure 20.2 V-Y anoplasly (A) Incisions create
a V-shaped or triangular flap which is advanced
to close defect (B) Closure of skin behind “V” pushes the flap into the anal canal, and the flap is sutured in place
Figure 20.3 Ana1 S-plasty (A) Ectroion is excised
and S-shaped incisions are created (B) and (C)
flaps are rotated lo close the defects and sutured
in place.
Trang 3Figure 20.4 Y-V anoplasty (A) Y shaped incision is made (B) V-shaped flap is mobilized and advanced to the top of the defect (C) Flap is and sutured in place.
Figure 20.5 House advancement flap (A) House-shaped flap is created (B) The flap is advanced into the anal canal and (C) sutured in place.
Figure 20.6 Diamond flap (A) Diamond-shaped flap is created (B) The flap is advanced into the anal canal to fill the defect (lnsert demonstrates perforating
subcutaneous blood supply) (C) Flap is sutured in place.
Other techniques of flap formation have been suggested
Christensen et al (117) proposed the use of “house”
advance-ment pedicle flaps The editors prefer the house flap because it is
easy to construct, can cover as much as 25% of the anal
circumfer-ence, and permits primary closure of the donor site (Figure 20.5)
If additional coverage is needed, two, three, or four flaps may be
used Caplin and Kodner (118) recommended the use of the
dia-mond flap for many of the same reasons (Figure 20.6)
ConCluSion
Chronic anal fissure is a common and painful anorectal dis-order Many treatments are available for benign idiopathic fis-sures The goal of treatment is to reduce the high anal resting pressure or internal sphincter hypertonia in fissure patients First line therapy consists of either topical nitrates or calcium channel antagonists If topical therapies fail, a repeat treatment course can be prescribed As second line therapy, botulinum
Trang 4toxin injection or internal sphincterotomy can be performed
Ideally, patients who are at risk of incontinence after
inter-nal ainter-nal sphincter division should attempt medical therapy
(age>50, multiparous female, previous anorectal surgery) If
sphincterotomy is contemplated for high risk patients,
preop-erative anal manometry and ultrasound should be considered
Alternatively, fissurectomy with anal advancement flap can be
performed There is scarce data on the ideal treatment for
resist-ant anal fissure Patients at high risk of fissure persistence may
be considered for internal sphincterotomy as first line therapy
(symptom duration >12 months, presence of a sentinel pile,
persistently elevated mean anal resting pressure)
reFerenCeS
1 Oh C, Divino DM, Steinhagen RM Anal Fissure:20 year
experience Dis Colon Rectum 1995; 38: 378–82
2 Pescatori M, Interisano A Annual report of the Italian
colo-proctology units Tech Coloproctol 1995; 2: 29–30
3 Gibbons CP, Read NW Anal hypertonia in fissures:cause or
effect? Br J Surg June 1986; 73(6): 443–45
4 Klosterhalfen B, Vogel P, Rixen H, Mittermayer C Topography
of the inferior rectal artery: a possible cause of chronic,
pri-mary anal fissure Dis Colon Rectum 1989; 32(1): 43–52
5 Schouten WR, Briel JW, Auwerda JJ Relationship between
anal pressure and anodermal blood flow: the vascular
pathogenesis of anal fissures Dis Colon Rectum 1994;
37(7): 664–9
6 Brisinda G, Albanese A, Cadeddu F et al Botulinum
neu-rotoxin to treat chronic anal fissure:results of a randomized
‘Botox vs Dysport’ controlled trial Aliment Pharmacol Ther
2004; 19: 695–701
7 Nelson R A systematic review of medical therapy for anal
fissure Dis Colon Rectum 2004; 47: 422–31
8 Nelson R Meta-analysis of operative techniques for
fissure-in-ano Dis Colon Rectum 1999; 42: 1424–31
9 Nelson R Nonsurgical therapy for anal fissure Cochrane
Database Syst Rev 2006; 4: CD003431
10 Nelson R Operative procedures for fissure in ano Cochrane
Database Syst Rev 2005; 2: CD002199
11 Gough MJ, Lewis A The conservative treatment of
fissure-in-ano Br J Surg 1983; 70: 175–6
12 Orsay C, Rakinic J, Perry WB et al Practice parameters
for the management of anal fissures (revised) Dis Colon
Rectum 2004; 47: 2003–7
13 Jensen SL Treatment of first episodes of acute anal fissure:
prospective randomized study of lignocaine ointment versus
hydrocortisone ointment or warm sitz baths plus bran
Br Med J (Clin Res Ed) 1986; 292(6529): 1167–9
14 Jensen SL Maintenance therapy with unprocessed bran in
the prevention if acute anal fissure recurrence J Royal Soc
Med 1987; 80(5): 296–8
15 Gupta PJ Randomized, controlled study comparing sitz
bath and no sitz bath treatments in patients with acute anal
fissures ANZ J Surg 2006; 76: 718–21
16 McDonald P, Driscoll AM, Nicholls RJ The anal dilator in
the conservative management of acute anal fissures Br J Surg
1983; 70: 25–6
17 Bacher H, Mischinger HJ, Werkgartner G et al Local nitro-glycerin for treatment of anal fissures: an alternative to lateral sphincterotomy? Dis Colon Rectum 1997: 40(7): 840–5
18 Antropoli C, Perrotti P, Rubino M et al Nifedipine for local use in conservative treatment of anal fissures Dis Colon Rectum 1999; 42(8): 1011–5
19 Garrido R, Lagos N, Lattes K et al Gonyautoxin: New treat-ment for acute and chronic anal fissures Dis Colon Rectum 2005; 48(2): 335–43
20 O’Kelly T Brading A, Mortensen N Nerve mediated relax-ation of the human internal anal sphincter: role of nitric oxide Gut 1993; 34: 689–93
21 Loder PB, Kamm MA, Nicholls RJ, Phillips RKS ‘Reversiable chemical sphincterotomy’ by local application of glyceryl trinitrate Br J Surg 1994; 81: 1386–9
22 Schouten WR, Briel JW, Boerma MO et al Pathophysiological aspects and clinical outcome of intra-anal application of isosorbide dinitrate in patients with chronic anal fissure Gut 1996; 39: 465–9
23 Thornton MJ, Kennedy ML, King DW Manometric effect
on topical glyceryl trinitrate and its impact on chronic anal fissure healing Dis Colon Rectum 2005; 48: 1207–12
24 Lund JN, Scholefield JH A randomized, prospective, double-blind, placebo controlled trial of glyceryl trinitrate ointment
in treatment of anal fissure Lancet 1997; 349: 11–4
25 Chaudhuri S, Pal AK, Acharya A et al Treatment of chronic anal fissure with topical glyceryl trinitrate: a double-blind, placebo-controlled trial Indian J Gastroenterol 2001; 20(3): 101–2
26 Altomare DF, Rinaldi M, Milito G et al Glyceryl trinitrate for chronic anal fissure-healing or headache? Dis Colon Rectum 2000; 43: 174–81
27 Kennedy ML, Sowter S, Nguyen H, Lubowski DZ Glyceryl trinitrate ointment for the treatment of chronic anal fissure: results of a placebo-controlled trial and long-term follow-up Dis Colon Rectum 1999; 42(8): 1000–6
28 Maan MS, Mishra R, Thomas S, Hadka NS Randomized, double-blind trial comparing topical nitroglycerin with xylocaine and proctosedyl in idiopathic chronic anal fissure Indian J Gastroenterol 2004; 23: 91–3
29 Carapeti EA, Kamm MA, McDonald PJ et al Randomised controlled trial shows that glyceryl trinitrate heals anal fissures, higher doses are not more effective, and there is a high recurrence rate Gut 1999; 44: 727–30
30 Bailey HR, Beck DE, Billingham RP et al A study to deter-mine the nitroglycerin ointment dose and dosing interval that best promote the healing of chronic anal fissures Dis Colon Rectum 2002; 45(9): 1192–9
31 Scholefield JH, Bock JU, Marla B et al A dose finding study with 0.1%, 0.2% and 0.4% glyceryl trinitrate ointment
in patients with chronic anal fissures Gut 2003; 52(2): 264–9
32 Wierre AJ, Palamba HW, Spillenaar Bilgen EJ, Eggink WF Isosorbide dinitrate in the treatment of anal fissure: a ran-domised, prospective, double blind, placebo-controlled trial Eur J Surg 2001; 167: 382–5
Trang 533 Tankova L, Yoncheva K, Muhtarov M, Kadyan H, Draganov V
Topical mononitrate treatment in patients with anal fissure
Aliment Pharmacol Ther 2002; 16: 101–3
34 Colak T, Ipek T, Urkaya N, Kanik A, Dirlik M A randomized
study comparing systemic transdermal treatment and local
application of glyceryl trinitrate ointment in the management
of chronic anal fissure Eur J Surg 2002; Suppl 588: 18–22
35 Zuberi BF, Rajput MR, Abro H, Shaikh SA A randomized
trial of glyceryl trinitrate ointment and nitroglycerin patch in
healing of anal fissures Int J Colorectal Dis 2000; 15: 243–5
36 Richard CS, Gregoire R, Plewes EA et al Internal
sphinctero-tomy is superior to topical nitroglycerin in the treatment of
chronic anal fissure Dis Colon Rectum 2000; 43: 1048–58
37 Evans J, Luck A, Hewett P Glyceryl trinitrate vs lateral
sphincterotomy for chronic anal fissure Dis Colon Rectum
2001; 44: 93–7
38 Libertiny G, Knight JS, Farouk R Randomised trial of topical
0.2% glyceryl trinitrate and lateral internal sphincterotomy
for the treatment of patients with chronic anal fissure:
long-term follow-up Eur J Surg 2002; 168: 418–21
39 Parellada C Randomized, prospective trial comparing
0.2 percent isosorbide dinitrate ointment with
sphinc-terotomy in treatment of chronic anal fissure: a 2 year
follow-up Dis Colon Rectum 2004; 47: 437–43
40 Oettle GJ Glyceryl trinitrate vs sphincterotomy for
treat-ment of chronic fissure in ano Dis Colon Rectum 1997;
40(11): 1318–20
41 Mishra R, Thomas S, Maan MS, Hadke NS Topical
nitro-glycerin versus lateral internal sphincterotomy for chronic
anal fissure: prospective, randomized trial ANZ J Surg
2005; 75: 1032–5
42 Cook TA, Brading AF, McC Mortensen NJ Differences in
contractile properties of anorectal smooth muscle and the
effects of calcium channel blockade Br J Surg 1999; 86: 70–5
43 Chrysos E, Xynos E, Tzovaras G et al Effect of nifedepine on
rectoanal motility Dis Colon Rectum 1996; 39: 212–6
44 Carapeti EA, Kamm MA, Evans BK, Phillips RK Topical
diltiazem and bethanechol decrease anal sphincter pressure
without side effects Gut 1999; 45: 719–22
45 Perotti P, Bove A, Antropoli C et al Topical nifedipine with
lidocaine ointment vs active control for the treatment of
chronic anal fissure: results of a prospective, randomized,
double-blind study Dis Colon Rectum 2002; 45: 1468–75
46 Bielecki K, Kolodziejczak M A prospective randomized trial
of diltiazem and glyceryl trinitrate ointment in the treatment
of chronic anal fissure Colorectal Disease 2003; 5: 256–7
47 Kocher HM, Steward M, Leather AJM, Cullen PT Randomized
clinical trl assessing the side effects of glyceryl trinitrate
and diltiazem hydrochloride in the treatment of chronic anal
fissure Br J Surg 2002; 89: 413–7
48 Shrivastava UK, Jain BK, Kumar P, Saifee Y A comparison
of the effects of diltiazem and glyceryl trinitrate ointment in
the treatment of chronic anal fissure: a randomized clinical
trial Surg Today 2007; 37: 482–5
49 Ezri T, Susmallian S Topical nifedipine versus topical
glyc-eryl trinitrate for treatment of chronic anal fissure Dis
Colon Rectum 2003; 46: 805–8
50 Mustafa NA, Cengiz S, Turkyilmaz S, Yucel Y Comparison
of topical glyceryl trinitrate ointment and oral nifedipine in the treatment of chronic anal fissure Acta Chir Belg 2005; 105: 55–8
51 Ho KS, Ho YH Randomized clinical trial comparing oral nifedipine with lateral anal sphincterotomy and tailored sphincterotomy in the treatment of chronic anal fissure
Br J Surg 2005; 92: 403–8
52 Katsinelos P, Papaziogas B, Koutelidakis I et al Topical 0.5% nifedipine vs lateral internal sphincterotomy for the treatment
of chronic anal fissure: long-term follow-up Int J Colorectal Dis 2006; 21: 179–83
53 Jonas M, Neal K, Abercrombie JF, Scholefield JH A ran-domized trial of oral vs topical diltiazem for chronic anal fissures Dis Colon Rectum 2001; 44: 1074–8
54 Jones OM, Brading AF, Mortensen NJ Mechanism of action
of botulinum toxin on the internal anal sphincter Br J Surg 2004; 91(2): 224–8
55 Fernandez LF, Conde Freire R, Rios Rios A et al Botulinum toxin for the treatment of anal fissure Dig Surg 1999; 16(6): 515–8
56 Espi A, Melo F, Minguez M et al Therapeutic use of botuli-num toxin in anal fissure Int J Colorectal Dis 1998; 12: 163
57 Maria G, Brisinda G, Bentivoglio AR et al Botulinum toxin injections in the internal anal sphincter for the treatment
of chronic anal fissure: long-term results after two different dosing regimens Ann Surg 1998; 228(5): 664–9
58 Brisinda G, Maria G, Sganga G et al Effectiveness of higher doses of botulinum toxin to induce healing in patients with chronic anal fissures Surgery 2002; 131: 179–84
59 Minguez M, Melo F, Espi A et al Therapeutic effects of dif-ferent doses of botulinum toxin in chronic anal fissure Dis Colon Rectum 1999; 42: 1016–21
60 Maria G, Brisinda G, Bentivoglio AR et al Influence of botulinum toxin site of injections on healing rate in patient with chronic anal fissure Am J Surg 2000; 179; 46–50
61 Colak T, Ipek T, Kanik A, Aydin S A randomized trial of bot-ulinum toxin vs lidocain pomade for chronic anal fissure Acta Gastroenterol Belg 2002; 65(4): 187–90
62 Siproudhis L, Sebille V, Pigot F et al Lack of efficacy of botu-linum toxin in chronic anal fissure Aliment Pharmacol Ther 2003; 18: 515–24
63 Maria G, Cassetta E, Gui D et al A comparison of botulinum toxin and saline for the treatment of chronic anal fissure
N Engl J Med 1998; 338: 217–20
64 Brisinda G, Maria G, Bentivoglio AR et al A comparison of injections of botulinum toxin and topical nitroglycerin oint-ment for the treatoint-ment of chronic anal fissure N Engl J Med 1999; 341: 65–9
65 Brisinda G, Cadeddu F, Brandara F, Marniga G, Maria G Randomized clinical trial comparing botulinum toxin injec-tions with 0.2 percent nitroglycerin ointment for chronic anal fissure Br J Surg 2007; 94: 162–7
66 De Nardi P, Ortolano E, Radaelli G, Staudacher C Comparison
of glycerine trinitrate and botulinum toxin-a for the treat-ment of chronic anal fissure:long-term results Dis Colon Rectum 2006; 49: 427–32
Trang 667 Fruehauf H, Fied M, Wegmueller B, Bauerfeind P, Thumshirn
M Efficacy and safety of botulinum toxin a injection
com-pared with topical nitroglycerin ointment for the treatment
of chronic anal fissure: a prospective randomized study Am
J Gastroenterol 2006; 101: 2107–12
68 Minguez M, Melo F, Epsi A et al Longterm followup of CAF
after healing with BT Gastroenterology 2002; 123: 112–7
69 Arroyo A, Perez F, Serrano P et al Surgical versus
chemi-cal (botulinum toxin) sphincterotomy for chronic anal
fissure: long-term results of a prospective randomized
clinical and manometric study Am J Surg 2005; 189:
429–34
70 Iswariah H, Stephens J, Rieger N, Rodda D, Hewett P
Randomized prospective controlled trial of lateral internal
sphincterotomy versus injections of botulinum toxin for
the treatment of idiopathic fissure in ano ANZ J Surg 2005;
75: 553–5
71 Mentes BB, Irkorucu O, Akin M, Leventoglu S, Tatlicioglu
E.Comparison of botulinum toxin injection and lateral
internal sphincterotomy for the treatment of chronic anal
fissure Dis Colon Rectum 2003; 46: 232–7
72 Watts JM, Bennett RC, Goligher JC Stretching of the anal
sphincters in the treatment of chronic fissure-in-ano BMJ
1965; 2: 342–3
73 Eisenhammer S The surgical correction of chronic anal
(sphincteric) contracture S Afr Med J 1951; 25: 486–9
74 Chowcat NL, Araujo JGC, Boulos PB Internal
sphinctero-tomy for chronic anal fissure: long term effects on anal
pressure Br J Surg 1986; 73: 915–6
75 Jensen SL, Lund F, Nielson OV, Tange G Lateral
subcutane-ous sphincterotomy versus anal dilatation in the treatment
of fissure in ano in outpatients: a prospective randomized
study BMJ 1984; 289: 528–30
76 Olsen J, Mortensen PE, Krogh Peterson I, Christiansen J Anal
sphincter function after treatment of fissure-in-ano by
lat-eral subcutaneous sphincterotomy versus anal dilation Int J
Colorectal Dis 1987; 2: 155–7
77 Marby M, Alexander-Williams J, Buchman P et al A
ran-domized controlled trial to compare anal dilation with
lat-eral subcutaneous sphincterotomy for anal fissure Dis Colon
Rectum 1979; 22: 308–11
78 Saad AM, Omer A Surgical treatment of chronic anal
fis-sure-in-ano: a propetive randomised study East Afr Med J
1992; 69(11): 613–5
79 Weaver RM, Ambrose NS, Alexander-Williams J, Keighley
RB Manual dilatation of the anus vs lateral subcutaneous
sphincterotomy in the treatment of chronic fissure-in-ano:
results of a prospective, randomized clinical trial Dis Colon
Rectum 1987; 30: 420–3
80 Gough MJ, Lewis A The conservative treatment of
fissure-in-ano Br J Surg 1983; 70: 175–6
81 Di Visconte MS, Di Bella R, Munegato G Randomized,
pro-spective trial comparing 0.25 percent glycerin trinitrate
oint-ment and anal cryothermal dilators only with 0.25 percent
glycerin trinitrate ointment and only with anal cryothermal
dilators in the treatment of chronic anal fissure: a two year
follow-up Dis Colon Rectum 2006; 49: 1822–30
82 Renzi A, Brusciano L, Pescatori M et al Pneumatic bal-lon dilation for chronic anal fissure: a prospective, clini-cal, endosonographic and manometric study Dis Colon Rectum 2005; 48: 121–6
83 Boschetto S, Giovannone M, Tosoni M, Barberani F Hydro-pneumatic anal dilation in conservative treatment of chronic anal fissure:clinical outcomes and randomized comparison with topical nitroglycerin Tech Coloproctol 2004; 8: 89–93
84 Abcarian H Surgical Correction of chronic anal fissure: results of lateral internal sphincterotomy vs fissurectomy-midline sphincterotomy Dis Colon Rectum 1980; 23: 31–6
85 Parks A The management of fissure in ano Hosp Med 1967; 1: 737
86 Notaras MJ Lateral subcutaneous sphincterotomy for anal fissure- a new technique Proc R Soc Med 1969; 62: 713
87 Boulos PB, Araujo JGC Adequate internal sphincterotomy for chronic anal fissure: subcutaneous or open technique?
Br J Surg 1984; 71: 360–2
88 Kortbeek JB, Langevin JM, Khoo REH, Heine JA Chronic fissure in ano: a randomized study comparing open and subcutaneous lateral internal sphincterotomy Dis Colon Rectum 1992; 35: 835–7
89 Arroyo A, Perez F, Serrano P, Candela F Open versus closed lateral sphincterotomy performed as an outpatient proce-dure under local anesthesia for chronic anal fissure: prospec-tive randomized study of clinical and manometric longterm results J Am Coll Surg 2004; 199: 361–7
90 Wiley M, Day P, Rieger N, Stephens J, Moore J Open vs closed lateral internal sphincterotomy for idiopathic fissure-in-ano: A prospective, randomized, controlled trial Dis Colon Rectum 2004; 47: 847–52
91 Elsebae MMA A study of fecal incontinence in patients with chronic anal fissure: prospective, randomized, controlled trial of the extent of internal anal sphincter division during lateral sphincterotomy World J Surg 2007; 31: 2052–7
92 Bulent Mentes B, Ege B, Leventoglu S, Oguz M, Karadag A Extent of lateral internal sphincterotomy: up to the dentate line or up to the fissure apex? Dis Colon Rectum 2005; 48: 365–70
93 Ammari FF, Bani-Hani KE Faecal incontinence in patients with anal fissure: a consequence of internal sphincterotomy
or a feature of the condition? Surgeon 2004; 2(4): 225–9
94 Casillas S, Hull TL, Zutshi M et al Incontinence after lateral sphincterotomy: Are we underestimating it? Dis Colon Rectum 2005; 48: 1193–9
95 Garcia-Aguilar J, Belmonte Montes J, Perez JJ et al Incontinence after lateral internal sphincterotomy:anatomic and functional evaluation Dis Colon Rectum 1998; 41: 423–7
96 Rosa G, Lolli R, Piccinelli D et al Calibrated lateral internal sphincterotomy for chronic anal fissure Tech Coloproctol 2005; 9: 127–32
97 Hyman N Incontinence after lateral internal sphinctero-tomy: a prospective study and quality of life assessment Dis Colon Rectum 2004; 47: 35–8
98 Jenkins JT, Urie A Molloy RG Anterior anal fissures are asso-ciated with occult sphincter injury and abnormal sphincter function Colorectal Dis 2008; 10(3): 280–5
Trang 799 Corby H, Donnelly VS, O’Herlihy C, O’Connell PR Anal
canal pressures are low in postpartum anal fissure B J Surg
1997; 84: 86–8
100 Jonas M, Speake W, Scholfield JH Diltiazem heals glyceryl
trinitrate-resistant chronic anal fissures Dis Colon Rectum
2002; 45: 1091–5
101 Lindsey I, Jones OM, Cunningham C, George BD, Mortensen
NJM Botulinum toxin as second line therapy for chronic
anal fissure failing 0.2 glyceryl trinitrate Dis Colon Rectum
2003; 46: 361–6
102 Witte ME, Klaase JM Botulinum toxin A injection in ISDN
ointment-resistant chronic anal fissures Dig Surg 2007; 24:
197–201
103 Lysy J, Israeli-Yatzkan Y, Sestiery-Ittah M et al Topical
nitrates potentiate the effect of botulinum toxin in the
treatment of patients with refractory anal fissure Gut 2001;
48: 221–4
104 Jones OM, Merrie A, Cunningham C et al Randomized
clinical trial of botulinum toxin plus glyceryl trinitrate vs
botulinum toxin alone for medically resistant chronic anal
fissure: overall poor healing rates Dis Colon Rectum 2006;
49: 1574–80
105 Nyam DCNK, Wilson RG, Stewart KJ, Farouk R, Bartolo
DCC Island advancement flaps in the management of anal
fissures B J Surg 1995; 82: 326–8
106 Leong AF, Seow-Choen F Lateral sphincterotomy compared
with anal advancement flap for chronic anal fissures Dis
Colon Rectum 1995; 38: 69–71
107 Fleshman JW Fissure in ano and anal stenosis In: Beck DE, Wexner SD, eds Fundamentals of Anorectal Surgery,New York: McGraw-Hill, 1992: 170–82
108 Leong AFPK, Seow-Choen F Lateral sphincterotomy com-pared with anal advancement flap for chronic anal fissure Dis Colon Rectum 1995; 38: 69–71
109 Oh C, Albanese C S-plasty for various anal lesions Am J Surg 1992; 163: 606–8
110 Ferguson JA Repair of “Whitehead defornllty” of the anus Sur’g Gynecol Obstet 1959; 108: 115–6
111 Corman ML, Veidenheimer MC, Coller JA Anoplasty for anal stricture Surg Clin North Am 1976; 56: 727–31
112 Penn JA A case of anal reconstruction by means of local skin flaps Br J Plast Surg 1948; 1: 87–8
113 Gingold BS, Arvanitis M V-V anoplasty for treatment of anal stricture Surg Gynecol Obstet 1986; 162: 241–2
114 Angelchik PD, Harms BA, Starling JR Repair of anal stricture and mucosal ectropion with V-V or pedicle flap anoplasty
Am J Surg 1993; 166: 55–9
115 Ramanujan PS, Venkatesh KS, Cohen M V-V anoplasty for severe anal stenosis Contemp Surg 1988; 3: 62–8
116 Rosen L V- Y advancement for anal ectropion Dis Colon Rectum 1986; 29: 596–8
117 Christensen MA, Pitsch RM, Cali RL, Blatchford GJ, Thorson
AG “House” advancement pedicle flap for anal stenosis Dis Colon Rectum 1992; 35: 201–3
118 Caplin DA, Kodner IJ Repair of anal stricture and mucosal ectro-pion by simple flap procedures Ills Colon Rectum 1986; 29: 92
Trang 8 Surgery for pilonidal disease and hidradenitis suppurativa
Paula I Denoya and Eric G Weiss
Challenging CaSe
A 35-year-old healthy male undergoes pilonidal cystectomy by
wide local excision down to sacral fascia Six months
postop-eratively his wound has failed to heal as manifest by a persistent
4 × 4 cm by 2 cm deep granulation bed
CaSe ManageMent
The patient has a nonhealing pilonidal wound Options include
surgical reexcision with intensive postop wound management or
some type of excision and flap closure as described in this chapter
intRODUCtiOn
Pilonidal disease and hidradenitis suppurativa are both
condi-tions affecting the perianal area, and therefore are often referred
to the colorectal surgeon for management The management of
these diseases can be quite challenging Both conditions may be
complicated by recurrent disease and may result in significant
scarring or large open wounds in the perianal or coccygeal area
PilOniDal DiSeaSe
Pilonidal disease is a chronic suppurative condition which occurs
most commonly in the sacrococcygeal area It typically presents
as a painless cyst or sinus opening in the gluteal cleft, as an acute
or recurrent abscess, or as chronic draining sinuses It most
com-monly affects Caucasian males between the ages of 15 and 30
and is essentially not seen after the age of 45 The true incidence
is unknown, but pilonidal disease is responsible for the loss of
significant healthcare resources and workhours
Historical Perspective
Pilonidal disease is believed to have been first described by Mayo
(1) in 1833 The term “pilonidal,” originating from the Latin
words for “hair” and “nest,” was not coined until 1880 by Hodges
(2) The disease became more widely known during World War
II, when the number of soldiers developing it put a burden on
the military At this point, it acquired the name of “jeep disease;”
a term coined by Buie (3) based on the idea that the disease was
caused by trauma to the skin of the lower back from riding in jeeps
for extended periods of time under hot and sweaty conditions
Early in the documented history of this disease, the etiology
was believed to be congenital The pilonidal cysts and sinuses
were thought to be embryologic remnants resulting from failed
involution of the neural tube structures This theory was
sup-ported by studies of fetuses, which identified remnants of midline
structures It was believed that these structures would normally
involute before birth, but sometimes failed to do so and led to the
development of pilonidal sinuses.(4)
In 1946, Patey (5) introduced a theory of an acquired etiology
for pilonidal disease, suggesting that hair piercing into the
sacro-coccygeal skin caused the sinuses and infected cysts This acquired
theory was later supported by other studies (6–8) and is now widely accepted as the etiology of pilonidal disease Loose hairs from the head or back fall and accumulate in the gluteal cleft The hairs are then drilled into the skin deep in the cleft by friction from the but-tocks rubbing together while walking As the person ambulates, the hairs get pulled into the sinus, creating a cyst containing hair and debris This can periodically get infected and drain spontaneously through lateral sinus tracts, or present acutely as an abscess Studies
of surgical specimens have found cysts containing hair and debris, but hair follicles have never been found in the cyst wall itself, sup-porting the theory that the hair is of external origin.(9) (Figure 21.1) Bascom studied the midline pits and believed that these are likely enlarged hair follicles which are involved in the etiology of the disease.(10) He theorized that ingrown hairs originating in these midline gluteal hair follicles were pushed into the subcutane-ous fat and resulted in pilonidal abscess Pilonidal disease has also rarely been described in other areas of the body, such as the hands
of barbers (11), sheep shearers (12), and others who handle loose hairs.(13) This further supports the acquired nature of the disease
Diagnosis
The diagnosis is made by physical examination in a patient who generally fits the demographics of being hirsute and in the 2nd or 3rd decade of life Characteristic findings on exam are small mid-line pits at the superior aspect of the gluteal cleft, approximately
3–5 cm from the anus (Figure 21.2) There may be only one or
mul-tiple pits present, and there may be tufts of hair or debris in them Some patients may also have lateral fistula openings which can
Figure 21.1 Pilonidal cyst opened after excision showing hair inside cyst cavity.
Trang 9undergoing incision and drainage for first presentation of pilo-nidal abscess, 58% healed the wounds within 10 weeks, and 21% recurred during the 18 month follow-up period.(17) This recur-rence rate of approximately 20% is consistent with that found throughout the literature
Management of Chronic Disease
Chronic pilonidal disease may present in several forms: a nonheal-ing wound after initial drainage, chronically drainnonheal-ing sinuses, or recurrent pain and infection The goals of definitive treatment of the disease are to remove the diseased tissue in a manner that will prevent recurrence, to change the local environment of the gluteal cleft, to decrease the chance of recurrence and allow healing, and
to allow the patient to resume their normal activities and return
to work quickly There is no one ideal approach to managing this disease
Nonsurgical Treatment
There is very little role for purely nonsurgical management of pilo-nidal disease In select patients who are found to have asympto-matic midline pits with no evidence of infection, it is possible to just observe the patients Prophylactically, the patient may be instructed
to ensure good hygiene, to keep the area of the gluteal cleft dry, and to periodically shave the area to keep hairs from accumulating Patients who present with acute abscess will require drainage, but sometimes may be able to be managed nonoperatively afterwards
Figure 21.2 Chronic pilonidal disease showing midline pit.
Figure 21.3 Acute pilonidal abscess Note midline opening with abscess slightly
to the right of midline.
periodically drain purulent discharge In the acute presentation, the
patient may present with an abscess which is usually found just off
the midline, along with the typical finding of midline pits (Figure
21.3) The differential diagnosis includes perianal abscess or fistula,
hidradenitis suppurativa, and other presacral or spinal lesions such
as chordoma or ependymoma However, pilonidal disease can
usu-ally be identified by its characteristic location in the gluteal cleft
away from the anus, and by the presence of midline pits In severe
cases where there is doubt, imaging with CT scan or MRI (14) may
be useful, though usually not necessary
There have been rare reports of malignancy developing in
chronic pilonidal sinuses Most commonly these are squamous
cell carcinomas These tumors are fairly aggressive, with a high
recurrence rate and poor prognosis.(15, 16)
Management of Acute Disease
The treatment for an acute pilonidal abscess is similar to that of
an abscess in any other location Incision and drainage, leaving
the wound to heal by secondary intention, is the accepted
treat-ment modality The patient can be positioned either in lateral
decubitus or prone position, though prone is generally preferred
Incision and drainage may be performed under local, regional,
or general anesthesia, and may be done in an ambulatory setting
such as the office or emergency room The area should be prepped
in standard fashion and local anesthetic infiltrated over the area
of fluctuance A vertical incision or an ellipse of skin should be
made over the fluctuant area, 1–2 cm off the midline Purulent
fluid, along with hair or other debris, may be found in the cyst
cavity This should be removed and the cavity packed An
alter-nate technique for patients with a large abscess cavity is to use
catheter drainage, as described in Chapter 19 The patient may
be discharged on antibiotics to treat the overlying cellulitis if
present and instructed in wound care In a series of 73 patients
Trang 10Approximately 20% of patients who undergo abscess drainage
will suffer from recurrent disease There is little information
avail-able regarding the nonoperative treatment of these recurrences
Armstrong et al (18) reported faster healing in 101 patients who
were managed with gluteal cleft shaving and good perineal hygiene
following incision and drainage, when compared with 229 patients
who underwent surgical management after drainage Following
these initial findings, the authors implemented a policy of
nonop-erative management for their patient population They reported
only 150 hospital admissions for complications of pilonidal disease
during the study period of 17 years, of whom only 23 patients
required surgical management They did not specifically report how
many total patients were under their care during the study period It
is likely that the patients who responded well to nonoperative
treat-ment had milder disease than the ones that required further surgery
This conservative approach can be considered in select patients with
mild disease, or in patients with significant medical
contraindica-tions to surgery Many surgeons advocate some form of depilation
following surgery to aid in healing Whether this is shaving, waxing,
chemical depilation, or laser treatments can be left up to individual
patient or surgeon preference.(19)
Other methods that have been described with varying success
are fibrin glue or phenol injections into the sinuses Greenberg
et al reported a series of 30 patients treated with fibrin glue
injection with no recurrence or infection after a follow-up of 23
months.(20) Another study of six patients who had injection of
fibrin glue into the sinus after curettage of pits reported no
recur-rences at 1 year.(21) However, this technique has not been tested
in larger case series or randomized trials
Phenol sclerotherapy has been used for treatment of pilonidal
disease with varying success Early studies showed potential benefit
in uncomplicated cases Dogru et al reported a series of 41 patients
(22) who had crystallized phenol applied to the wounds after
limited excision of midline pits Most patients required 2–3
appli-cations, and 95% healed completely There were two recurrences of
disease However, another study of 45 patients who had 1–2 mL of
80% phenol solution into the sinus reported 60% healing, and five
patients developed abscess requiring operative drainage.(23)
Surgical Options for Chronic Pilonidal Disease
Operations for chronic pilonidal disease involve excision of the diseased tissue This may result in a large defect which is difficult
to close in an area which is subject to significant tension and mois-ture This challenge has fueled the development of many different surgical techniques in an attempt to find the ideal operation So far, no technique has proven to be ideal This section of the chapter will review the most common operations and give an algorithm for the surgical approach to the management of chronic disease The operations described may be performed in prone or lateral decubitus position, under regional or general anesthesia The jack-knife prone position, with the operating table flexed at the waist approximately 30 degrees and the buttocks taped apart, provides the ideal exposure for most operations and is recommended unless contraindicated by individual patient factors Standard periopera-tive antibiotics are given before incision There is no need to con-tinue antibiotics postoperatively unless there is overlying cellulitis from acute infection Many of these operations may be done on an outpatient basis The more complex flaps require the patients to remain in the hospital on bedrest for approximately 2 days These patients may also receive postoperative antibiotics for a few days until the drains are removed Sutures are usually removed between
7 and 10 days after surgery
Wide Local Excision
The most commonly performed operation for pilonidal disease
is wide local excision An elliptical incision including all sinus tracks is made and carried down to the sacrococcygeal fascia, so that the entire cyst is removed There is debate as to the best way
to manage the large wound that results The benefits of leaving the wound open to heal by secondary intention include less chance of infection or wound breakdown, but this is counterbalanced by the increased time required to completely heal the wound, the need for frequent dressing changes, the added discomfort of having an open wound, and the increased time lost from work There are few randomized trials which examined this problem (Table 21.1) A series of 120 patients (24) who were randomized to either excision left open to heal by secondary intention or excision with primary
Table 21.1 Procedures for pilonidal disease: wide excision with healing by secondary intention or primary closure.
Study Closure number of Patients
hospital time (days) healing time (days) infection (%) Recurrence (%)
Follow-up (months)
Sondenaa et al
(24) (1996)
Al-Salamah et al
(27) (2007)
Fazeli et al (45)
(2006)
Mentes et al (25)
(2006)
Tejirian et al (26)
(2007
Note: (-) not described.