title: CT features of rounded atelectasis.
abstract: Rounded atelectasis (folded lung syndrome) is a form of pulmonary collapse associated with pleural thickening that can mimic a neoplasm on plain chest radiographs. The abnormality was diagnosed radiologically in nine patients in whom follow-up varied from 1 to 6 years. Four patients had bilateral lesions, making a total of 13 examples. The CT findings were analyzed and compared with previously published criteria for the diagnosis of this disorder. In all cases, CT showed a rounded mass, 3.5-7.0 cm in diameter, abutting a thickened pleural surface in the lung periphery. The margin closest to the hilum was blurred by the entering vessels in 92% of the cases. Our experience suggests that the CT findings of rounded atelectasis are characteristic of the abnormality.
authors.affiliation: Wessex Bodyscanner Unit, Southampton General Hospital, Hants, England.
authors.forename: K
authors.initials: K
authors.lastname: McHugh
authors.forename: R M
authors.initials: RM
authors.lastname: Blaquiere
mesh_terms: D000368:Aged; D005500:Follow-Up Studies; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D010994:Pleura / Q000000981:diagnostic imaging; D001261:Pulmonary Atelectasis / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed