Occult central pneumothorax.
D000328:Adult; D001706:Biopsy; D004630:Emergencies; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging / Q000473:pathology; D011030:Pneumothorax / Q000000981:diagnostic imaging* / Q000473:pathology; D011859:Radiography