Primary Pericardial Mesothelioma Causing Constrictive Pericarditis

We present a rare case of primary pericardial mesothelioma (PPM) causing constrictive pericarditis (CP). Our case highlights the importance of identifying the etiology of constriction and the role of multimodality imaging in CP. PPM is a primary pericardial malignancy and an unusual cause of CP that carries a grave prognosis despite pericardiectomy and/or chemotherapy. PPM can be difficult to diagnose and should be considered as a possibility when there is no other clear etiology of CP.