The ethmoidal "polypoid mucocele".
Seven patients with polypoid mucoceles of the ethmoid sinuses were examined by computed tomography (CT). The findings in all cases were remarkably similar. This unique CT appearance has not been seen with malignancies and should be considered characteristic of this benign entity.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005005:Ethmoid Sinus / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D009078:Mucocele / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed