title: Pneumomediastinum and pneumoretroperitoneum.
abstract: A 23-year-old man presented to the emergency department with extensive subcutaneous emphysema and severe dehydration after a prolonged self-imposed religious fast. Chest radiographs showed marked pneumomediastinum and pneumoretroperitoneum without pneumothorax. Patients are often admitted to the hospital for close observation when these findings are recognized, but this caution is generally unwarranted. This case illustrates the common occurrence of the usually benign entity of pneumomediastinum without pneumothorax.
authors.affiliation: Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Health Sciences Center, Denver, USA.
authors.forename: R S
authors.initials: RS
authors.lastname: Crausman
authors.forename: E M
authors.initials: EM
authors.lastname: Klinge
authors.forename: C
authors.initials: C
authors.lastname: Irvin
mesh_terms: D000328:Adult; D003681:Dehydration / Q000150:complications; D003937:Diagnosis, Differential; D005215:Fasting / Q000009:adverse effects; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D011859:Radiography; D012067:Religion; D012188:Retropneumoperitoneum / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology