Non-traumatic pneumopericardium and pyo-pneumopericardium; report of two cases.
D004938:Esophageal Neoplasms; D006801:Humans; D010439:Peptic Ulcer Perforation; D011026:Pneumopericardium / Q000209:etiology*
ESOPHAGUS/neoplasms; PEPTIC ULCER/perforation; PNEUMOPERICARDIUM/etiology and pathogenesis