title: [Pneumomediastinum or mediastinal emphysema. Case contribution and classification].
abstract: Five cases of pneumomediastinum with different aetiology are reported. The pathogenetic problems are examined and a new classification with physiopathologic criteria proposed.
mesh_terms: D000061:Accidents, Home; D000368:Aged; D002648:Child; D003371:Cough / Q000150:complications; D005260:Female; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000145:classification* / Q000209:etiology; D008875:Middle Aged; D010954:Plasmacytoma / Q000150:complications; D012253:Rib Fractures / Q000150:complications; D013352:Subcutaneous Emphysema / Q000209:etiology; D009626:Terminology as Topic
vernacular_title: Pneumomediastino o enfisema mediastinico. Contributo casistico e classificativo.