Mega-antrum.
Mega-antra may masquerade as destructive lesions of the antral portion of the temporal bone. Awareness of this entity and correlation with the physical and roentgenological examination could prevent surgical exploration of the temporal bone. New upper range size limits can be expected as mega-antra become more commonly identified.
D004427:Ear Diseases / Q000175:diagnosis; D005260:Female; D006801:Humans; D008416:Mastoid / Q000000981:diagnostic imaging; D008875:Middle Aged; D011859:Radiography