title: Spontaneous pneumomediastinum.
abstract: Five cases of spontaneous pneumomediastinum are presented. This is a benign condition that requires no specific therapy.
mesh_terms: D000293:Adolescent; D000328:Adult; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000000981:diagnostic imaging* / Q000209:etiology / Q000628:therapy; D005082:Physical Exertion; D011859:Radiography; D012146:Rest; D012422:Rupture, Spontaneous / Q000150:complications