Hemorrhagic Pericardial Cyst Complicated with Constrictive Pericarditis.

Pericardial cysts are rare abnormalities and are usually asymptomatic. Although several case reports on their diagnosis and treatment have been published, those on hemorrhagic pericardial cysts remain limited. We herein report the case of a 70-year-old man with a hemorrhagic pericardial cyst complicated with constrictive pericarditis 2 years after the initial diagnosis.