Pericardial cyst ten years after acute pericarditis.

A case of pericardial cyst development in the years after an episode of acute pericarditis is reported. The method of diagnosis allowed confirmation of the condition without thoracotomy. These aspects of the case are relevant to the genesis of pericardial cysts in general and establish ultrasound and subsequent contrast roentgenography are advocated as adequate means of diagnosis in this condition.