A Case of Isolated Cardiac Sarcoidosis: An Underdiagnosed Disease With Little Diagnostic Consensus

Abstract

Sarcoidosis is a rare cause of cardiomyopathy and can be missed when there is no pulmonary involvement. We present the case of a 55-year-old woman with isolated cardiac sarcoidosis who presented with symptoms of worsening intermittent dyspnea, weight gain, and lower extremity swelling. Cardiac evaluation showed a nonischemic cardiomyopathy secondary to an inflammatory cause. Cardiac magnetic resonance and positron emission tomography scans were performed that led to the diagnosis of isolated cardiac sarcoidosis. Recent updates in diagnostic criteria have allowed the use of imaging modalities alone to confirm the diagnosis in place of biopsy.