A Rare Cause of Constrictive Pericarditis: Primary Pericardial Mesothelioma.

This clinical vignette highlights the use of echocardiography, computed tomography, positron emission tomography, magnetic resonance imaging, and invasive hemodynamics to aid in making a rare diagnosis. This case highlights a 62-year-old male who presented with worsening dyspnea and was ultimately found to have constrictive pericarditis secondary to primary pericardial mesothelioma. The use of multimodality imaging can facilitate early diagnosis of this rare condition, helping to initiate treatment options for an otherwise high-mortality disease.