Primary isolated chronic chylopericardium.

Primary isolated chylopericardium is a rare entity. Its exact pathophysiology is still unknown. A case of chronic isolated primary pericardium diagnosed 12 years after the initial diagnosis of an asymptomatic pericardial effusion is reported. The diagnosis was established incidentally during surgery for resection of a papillary fibroelastoma of the aortic valve. q 2002 Published by Elsevier Science B.V.