title: [Pseudo-tumoral round atelectasis without known pleural history (apropos of 2 cases)].
abstract: The authors recall two cases of round atelectasis without any known pleural past-record. The first showed, on successive X rays, an increase in size of the image. In the second case a pleural effusion occurred after the discovery of a round opacity. They stress the various small radiological signs as a way of including the etiology of a purely mechanical atelectasis among the difficult diagnosis of intraparenchymal round opacities.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D010996:Pleural Effusion / Q000150:complications; D010997:Pleural Neoplasms / Q000175:diagnosis; D011030:Pneumothorax / Q000150:complications; D001261:Pulmonary Atelectasis / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology; D014056:Tomography, X-Ray
vernacular_title: Les atélectasies rondes pseudo-tumorales sans antécédents pleuraux avérés (à propos de deux cas).