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Arch Otolaryngol Head Neck Surg. 2005;131:827-828.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Diagnosis: Sphenoidal sinus mucocele

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

The multitude of symptoms and signs can initially present across a broad range of specialties, including otolaryngology, ophthalmology, and neurosurgery,² thereby confusing the diagnosis and leading to mismanagement.⁴ Clinical symptoms are caused by the enlarging mucocele compressing adjacent structures or by inflammatory spread and osteolytic prostaglandin release.⁵ The nature of . . . [Full Text of this Article]