title: The air crescent sign: causes and characteristics.
authors: Department of Internal Medicine, The University of Texas Health Science Center at Houston, Houston, Texas 77030, USA.
authors: Herbert L
authors: HL
authors: Fred
authors: Carolyn L
authors: CL
authors: Gardiner
mesh_terms: D000328:Adult; D000388:Air; D001232:Aspergillus fumigatus / Q000302:isolation & purification*; D001706:Biopsy; D006469:Hemoptysis / Q000382:microbiology*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000628:therapy*; D008168:Lung / Q000000981:diagnostic imaging / Q000382:microbiology* / Q000473:pathology; D008297:Male; D009336:Necrosis; D055732:Pulmonary Aspergillosis / Q000000981:diagnostic imaging / Q000382:microbiology* / Q000473:pathology; D011859:Radiography; D006435:Renal Dialysis