title: Halos and crescents.
authors.affiliation: Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Nin-Chieh
authors.initials: NC
authors.lastname: Hsu
authors.forename: Wen-Jeng
authors.initials: WJ
authors.lastname: Lee
authors.forename: Shuenn-Wen
authors.initials: SW
authors.lastname: Kuo
authors.forename: Jih-Shuin
authors.initials: JS
authors.lastname: Jerng
mesh_terms: D000196:Actinomycosis / Q000150:complications / Q000000981:diagnostic imaging*; D000328:Adult; D005260:Female; D006469:Hemoptysis / Q000209:etiology; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008171:Lung Diseases / Q000150:complications / Q000000981:diagnostic imaging* / Q000382:microbiology; D011859:Radiography