title: Air crescent sign: not always due to fungal infection.
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, No. 2, Yude Road, Taichung, Taiwan.
authors.forename: Y Y
authors.initials: YY
authors.lastname: Tseng
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, No. 2, Yude Road, Department of Respiratory Therapy, China Medical University, Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan. hsnu758@gmail.com.
authors.forename: Chia-Hung
authors.initials: CH
authors.lastname: Chen
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000601:surgery; D000368:Aged; D000388:Air; D003937:Diagnosis, Differential; D005260:Female; D006469:Hemoptysis / Q000209:etiology; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D009181:Mycoses / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed