Pulmonary air meniscus sign.
In chest roentgenograms, the pulmonary meniscus sign is a crescent-shaped inclusion of air surrounded by consolidated lung tissue. The common cause is aspergilloma. A hydatid cyst is, however, the most common cause in endemic areas. In this study, 10 cases with meniscus sign are presented and the pertinent literature is reviewed.
D000293:Adolescent; D000328:Adult; D001228:Aspergillosis / Q000000981:diagnostic imaging*; D002648:Child; D004445:Echinococcosis, Pulmonary / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008172:Lung Diseases, Fungal / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014375:Tuberculoma / Q000000981:diagnostic imaging*