The air crescent sign.
Abramson
S
S
Department of Radiology, University Hospitals of Cleveland, 11100 Euclid Ave, Cleveland, OH 44106, USA. simeonabramson@hotmail.com
D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008172:Lung Diseases, Fungal / Q000000981:diagnostic imaging; D011859:Radiography