title: [Atelectasis caused by lung folding].
abstract: An atypical disturbance of ventilation supervening a pleural effusion may occur due to atelectasis by lung folding which is seen radiologically as a round image close to the chest wall with the appearance of a pseudo-tumour. The authors review the mechanisms and the clinical and radiological presentation of this disorder based on 7 cases and a review of the literature. The posterior basal type with adhesions to the chest wall are the most frequent. An intra-parenchymatous and a double-form are described. The diagnosis of this benign disorder is radiological. It is based on a characteristic displacement of the vessels and bronchi and associated pleural signs. Recognition of these signs avoids all invasive procedures.
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008168:Lung / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000150:complications*; D001261:Pulmonary Atelectasis / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D011859:Radiography; D000267:Tissue Adhesions / Q000150:complications
vernacular_title: L'atélectasie par enroulement.