The CT Classification of Ethmoid Mucoceles

Abstract
The computed tomography (CT) appearance of mucoceles involving the human ethmoid sinuses is presented. A classification based on the growth patterns of these mucoceles is proposed, and a differential diagnosis for each group is suggested. The unique CT appearance of the ethmoid polypoid-mucocele is described for the 1st time, and the radiographic definition of a mucocele is discussed.

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