title: Spontaneous pneumonediastinum associated with pulmonary cavitation.
abstract: Two patients developed spontaneous pneumomediastinum. One had a tuberculous cavity and the other an emphysematous bulla.
mesh_terms: D000368:Aged; D001768:Blister / Q000150:complications; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008297:Male; D008478:Mediastinal Emphysema / Q000000981:diagnostic imaging / Q000209:etiology*; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000150:complications*; D011859:Radiography; D014397:Tuberculosis, Pulmonary / Q000150:complications*