title: Peripheral upper lobe collapse simulating pleural effusion.
abstract: Two cases of segmental collapse of the upper lobe simulating an apical pleural effusion in association with pneumothorax are reported. Our cases differ from previously reported ones in that the peripheral collapse occurred in association with a pneumothorax without pleural adhesions, it was segmental rather than lobar, and was observed in adults.
authors.affiliation: Department of Radiology, St. Mary's Hospital, Catholic University Medical College, Seoul, Korea.
authors.forename: S H
authors.initials: SH
authors.lastname: Park
authors.forename: Y W
authors.initials: YW
authors.lastname: Bahk
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000150:complications / Q000000981:diagnostic imaging*; D011030:Pneumothorax / Q000150:complications; D001261:Pulmonary Atelectasis / Q000150:complications / Q000000981:diagnostic imaging*; D011859:Radiography