Naana Afua Jumah, HMS IIIAcute • Bacterial infection of the paranasal sinuses • Symptoms last less than 30 days • Complete resolution Chronic • Inflammation of the paranasal sinuses •
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Gillian Lieberman, MD
Complications of Pediatric Sinusitis
Naana Afua Jumah, HMS III
Gillian Lieberman, MD
22 January 2007
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Essential Clinical Anatomy, 2002
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http://xray.20m.com/photo.html
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Age (years) Sinus Appearance Maturity
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Acute
• Bacterial infection of the paranasal sinuses
• Symptoms last less than 30 days
• Complete resolution
Chronic
• Inflammation of the paranasal sinuses
• Symptoms last more than 90 days
• Persistent residual respiratory symptoms of cough,
rhinorrhea and nasal obstruction
American Academy of Pediatrics, 2001
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1 Purulent nasal discharge >10 days
2 Recurrent or persistent clinical sinusitis
3 Preoperative evaluation for functional
endoscopic sinus surgery (FESS)
4 Suspected complication
5 Complex sinus disease
6 Suspected fungal sinusitis
*Imaging is not recommended for
uncomplicated acute sinusitis
American College of Radiology, 2006
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Diagnose Chronic Sinustis
Plain Film Radiograph
• Low sensitivity and therefore seldom used
• Caldwell (anteroposterior) - frontal, ant ethmoid
• Normal lateral – sphenoid
• Waters (occipitomental) - maxillary, ethmoid
CT
• High sensitivity and therefore the test of choice
• Coronal projection most accurate view of sinus anatomy
• Bone window on bone algorithm for sinus views
• Contrast for intracranial pathology
• Imaging for functional endoscopic sinus surgery (FESS)
• Radiation exposure
American College of Radiology, 2006
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• Intracranial pathology and complex sinus disease
• Lacks bony detail of sinus anatomy
• Long image collection time may require sedation
• No radiation
American College of Radiology, 2006 and Boyle, 2006
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Children
Incidence of abnormal sinus CT in children
with no history of sinusitis
High incidence (62%) of viral URI symptoms
or allergic rhinitis within the past 2 weeks
Maning et al, 1996
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Staging System
Correlation of clinical symptoms of chronic sinusitis with
CT radiographs
• Paranasal sinuses opacification
0 none, 1 partial, 2 complete
Assign score independently to left and right paranasal sinuses
• Osteomeatal complex
0 not occluded, 2 occluded
• Sinus not developed: 0
Score: 0-2 no disease, 3-4 equivocal, ≥5 chronic sinusitis
Bhattacharyya et al, 2004
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Gillian Lieberman, MD
Patient Presentation
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fever, malaise and sinus congestion
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Coronal CT Bone Window
1 Opacification of the ethmoid sinuses
2 Opacification of the right maxillary sinus
3 Concha bullosa a normal variant
Axial CT Bone Window
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Axial CT Bone Window Axial MR T2
Courtesy of Dr Hines-Peralta
1 Opacification of the ethmoid sinuses
2 Opacification of the sphenoid sinuses
3 Fluid in the right mastoid air cells
4 Chronic sinusitis in the maxillary sinuses
5 Frothy appearance of acute sinusitis in
the maxillary sinus
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Gillian Lieberman, MD
MR T1 Pre-contrast MR T1 Post-contrast
Courtesy of Dr Hines-Peralta
1 Low signal areas in the anterior and
left lateral temporal lobes indicating
regions of restricted diffusion
suggestive of edema or fluid
1
1
2
2
2 Low signal areas in the anterior and
left lateral temporal lobe surrounded
by a rim of enhancement consistent with empyema
Patient BE: Subdural Empyema on Axial MRI
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Gillian Lieberman, MD
Courtesy of Dr Hines-Peralta
Coronoal MR T1 with Contrast
2 Low signal areas surrounded by
a rim of enhancement consistent with empyema on sagittal section
1
Patient BE: Subdural
Empyema on MRI
1 Low signal areas surrounded by
a rim of enhancement consistent
with empyema on coronal section
Sagittal MR T1 with Contrast
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1 Focal areas of subtle
enhancement of the meninges consistent with meningitis
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on MRI
http://www.math.uno.edu/~jensen/L/neuropath/images.htm
Axial MR T1 Pre-contrast Axial MR T1 Post-contrast
2 Ring of enhancement surrounding
the cerebellum consistent with meningitis
1 Meninges appear as a ring of low
signal intensity
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on MRI
Courtesy of Dr Hines-Peralta
Axial MR T1 Pre-contrast
1 Midline shift
2 Compression of the anterior horn of
the lateral ventricle
3 Compression of the left posterior
horn of the lateral ventricle
4 Diffuse effacement of the cortical gyri
shown best in the left parietal lobe
2 1
4
3
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Courtesy of Dr Hines-Peralta
Axial MR T1 Post-contrast Axial MR T2-weighted
1 Low signal areas indicating restricted
diffusion in the frontal lobes bilaterally and
the temporal lobe suggestive of edema or
a fluid collection
2 High signal areas that follow the pattern
of the gyri in the frontal lobes bilaterally and the temporal lobe more suggestive of edema than a fluid collection
on MRI
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on Diffusion-Weighted Imaging
Courtesy of Dr Hines-Peralta
Axial MR Diffusion-Weighted Image
1 High signal areas that follow the pattern
of the gyri in the frontal lobes bilaterally and the temporal lobe localizing areas of cerebral ischemia
1
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2 Craniectomy site and herniation of the
left cerebral hemisphere beyond the
skull margin
3 Post surgical aberrant air collections
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Courtesy of Dr Hines-Peralta and Nadalo and Hunter, 2004
Companion Patient 2: Axial MR T1 with Contrast
Patient BE: Follow-up Axial CT Brain
Window
1
2
3
1 Site of second craniectomy
2 Suspected abcess in left parietal lobe
Finding needs to be confirmed on MRI
3 Pair of rim enhancing lesions with low
signal intensity indicating the presence
of an intraparenchymal abscess
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• 11 year old girl with symptoms of sinusitis
suspected of having complications
• Coronal CT showed opacification of the
paranasal sinuses
• MRI showed subdural empyema, meningitis,
cerebral edema and cerebral ischemia
• An interventricular shunt was placed and a
craniectomy was performed
• CT showed a second craniectomy site and
the development of a possible parenchymal
abscess and
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Companion patients are shown to illustrate the
following radiographic findings:
• Orbital cellulitis and subperiosteal abscess
- the most common complication of
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Subperiosteal Abscess on CT
Kirsch and Turbin, 2005 and Reid, 2004
Companion Patient 4: Axial CT with
Contrast Soft Tissue Window
Companion Patient 3: Coronal CT with
Contrast Soft Tissue Window
1 Opacification of the ethmoid sinuses
2 Air-fluid level in the right maxillary sinus
3 Periobital soft tissue edema
4 Hypoplasia of the left maxillary sinus
5 Proptosis of the right orbit
6 Lentiform region of low signal with rim
enhancement consistent with abscess Lateral deviation of the medial rectus
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Ghorayeb, 2006 and Thomson Health, 2006
Companion Patient 6:
MR T1 with Contrast
Companion Patient 7
1 Sagittal view of opacified frontal sinus with fistula to soft
tissue overlying the frontal bone and soft tissue edema
2 Axial view showing the same
1
2
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Sinusitis, complications and correlation with imaging
Coronal CT MR T1 ± contrast MR T2 & T2 weighted
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1 American College of Radiology 2006 ACR Appropriateness Criteria, Sinusitis – Child.
2 KL Moore and AMR Agur Essential Clinical Anatomy, 2nd ed Baltimore: Lippincott Willams & Wilkins,
2002 p 577.
3 SJ Zinreich 2006 Progress in sinonasal imaging Ann Oto Rhino Laryn 115(9)Suppl 196:61-65.
4 JR Reid 2004 Complications of pediatric paranasal sinusitis Pediatr Radiol 34:933-942.
5 N Bhattacharrya, DT Jones, M Hill and NL Shapiro 2004 The diagnostic accuracy of computed
tomography in pediatric chronic sinusitis Arch Otolaryngol Head Neck Surg 130:1029-1032.
6 Welcome to radiography reporting http://xray.20m.com/photo.html Accessed 18 January 2007.
7 S Maning, MJ Biavati and DL Philips 1996 Correlation of clinical sinusitis signs and symptoms to
imaging findings in pediatric patients Int J Pediatr Otorhinolaryn 37:65-74.
8 GE Boyle, M Ahern, J Cooke, NP Sheehy, and JF Meaney 2006 An Interactive Taxonomy of MR
Imaging Sequences Radiographics 26:e24
9 KA Kronemer and WH McAlister 1997 Sinusitis and its imaging in the pediatric population Pediatr
Radiol 27:837-846.
10 Congental malformations, hydroencephaly, and herniation
11 J Zimmer, J Bhatt, JH Conway, M Edwards-Brown, DK Sokol 2006 Is it all in his head? Internet J
Pediatr Neonat 6(1)
12 BY Ghorayeb 2006 Otolaryngology Houston Accessed 18 January 2007
http://www.ghorayeb.com/PottsPuffyTumor.html
13 Thomson Healthcare 2006 Sinusitis PDR Health
14 American Academy of Pediatrics 2001 Clinical practice guideline: management of sinusitis
Pediatrics 108:798-808.
15 LA Nadalo and LK Hunter 2004 Brain Abscess http://www.emedicine.com/radio/topic91.htm
Accessed 20 January 2007.
16 CFE Kirsch and R Turbin 2005 Orbit, Infections eMedicine
17 MM Reeder Reeder and Felson’s Gamuts in Radiology, 4th ed New York: Springer, 2003, p 133.
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