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Pneumosinus dilatans associated with nasal polyposis.
D Malinvaud1, P Halimi, P Bonfils
1Department of ENT and Auditory Research Laboratory, Formation Associée Claude Bernard and CNRS UMR 8194, Hôpital Européen Georges Pompidou, Faculté Paris V, Universitê René Descartes, Paris, France. david.malinvaud@egp.aphp.fr
B-ENT
|February 18, 2012
Summary
Pneumosinus dilatans (PSD) and pneumocele, rare sinus expansions, may develop with nasal polyposis. These cases suggest increased sinus pressure contributes to these conditions.
Area of Science:
- Otolaryngology
- Radiology
- Pathology
Background:
- Pneumosinus dilatans (PSD) and pneumocele are characterized by abnormal expansion of paranasal sinuses.
- Their exact etiologies remain largely unknown, with various theories proposed.
Observation:
- This report details two unique cases of frontal PSD and pneumocele.
- Both patients presented with chronic rhinosinusitis and nasal polyposis.
- CT scans revealed enlarged frontal sinuses with varying degrees of bone thinning.
Findings:
- Nasal polyposis was a consistent finding in both cases of frontal PSD and pneumocele.
- Focal or generalized bony wall thinning distinguishes pneumocele from PSD.
- Both conditions share similar physiopathological and clinical courses.
Implications:
- The association with nasal polyposis offers new insights into the development of PSD and pneumocele.
- These findings support the pressure mechanism theory in the pathogenesis of these rare sinus pathologies.
- Understanding these associations may aid in diagnosis and management of sinonasal conditions.
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