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Clinical Problem Solving: Radiology
September 2005

Radiology Quiz Case 4: Diagnosis

Author Affiliations
 

R. NICKBRYANMDPATRICIA A.HUDGINSMD

Arch Otolaryngol Head Neck Surg. 2005;131(9):827-828. doi:10.1001/archotol.131.9.827

Isolated sphenoidal sinus mucoceles are rare and, by nature of their location, difficult to diagnose clinically, with few cases having been described in the English-language literature since Berg’s original article in 1889.1 They are benign epithelial-lined lesions that contain inspissated mucous and arise as a result of obstruction of the sinus osteum due to inflammation, trauma, congenital anomalies, mass lesions, or surgery.1 They represent 1% of all paranasal sinus mucoceles and 15% to 29% of all cases of sphenoidal sinus disease.2 The most commonly involved sites are the frontal ethmoidal (67%), maxillary (18.7%), sphenoidal (8.5%), and posterior ethmoidal (6.7%) sinuses.3

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