Pneumopericardium: report of a case.

An unusual case of pneumopericardium is described. It is due to a fistulous communication between the small bowel and pericardium. 4 years previously a gastro-jejunostomy was performed, and now a peptic ulcer in the jejunum had developed with abscess formation, thus giving rise to a fistulous communication between intestine and pericardium. The cause, symptoms and diagnostic procedures are described.