title: Hydropneumothorax: detection on supine radiographs.
abstract: Hydropneumothorax may be diagnosed on a supine radiograph by recognition of a pleural line with increased density lateral to it in the pleural space. Recognition of this condition may have implications for therapeutic chest tube placement.
mesh_terms: D000293:Adolescent; D000368:Aged; D005260:Female; D006801:Humans; D006872:Hydropneumothorax / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011030:Pneumothorax / Q000000981:diagnostic imaging; D011187:Posture; D011859:Radiography