Ventricular tachycardia - an atypical initial presentation of sarcoidosis: a case report

A Case of Burnt-Out Cardiac Sarcoidosis Presenting With Sustained Ventricular Tachycardia

Cardiac sarcoidosis is a challenging clinical entity in terms of diagnosis and management. Cardiac involvement is the most common cause of death in patients with sarcoidosis. Recently, there have been new advancements in the imaging modalities that aid in the diagnosis of this condition, including cardiac MRI and PET scan. These tools can help identify and determine the extent of the progression of sarcoidosis, which can have diagnostic and therapeutic implications. In this report, we present the case of a 74-year-old man with no history of sarcoidosis who presented with sustained ventricular tachycardia (VT) and was subsequently found to have findings consistent with burnt-out sarcoidosis on imaging. This case highlights the differences in the management of various stages of cardiac sarcoid involvement to reduce adverse outcomes.

What type of different clinical manifestations can cardiac sarcoidosis present?

Cardiac sarcoidosis is an infiltrative, granulomatous inflammatory disease of the myocardium. Generally, it can be difficult to diagnose cardiac sarcoidosis clinically because of the non-specific nature of its clinical manifestations. This property can be based on the presence of any clinical evidence of sarcoidosis in the other organs. We present two cases of cardiac sarcoidosis so as to demonstrate its different clinical manifestations. The first patient displayed no cardiac symptoms; the electrocardiogram showed an incidental right bundle branch block. Her cardiac magnetic resonance imaging (CMRI) revealed late-phase opaque material enhancement involving the inferior and inferoseptal segment of the left ventricle. The second patient was severely symptomatic in terms of cardiac involvement, and a transthoracic echocardiogram revealed global hypokinesia and septal brightness; his ejection fraction decreased to 45%. These cases highlighted the challenges encountered in the diagnosis and treatment of cardiac sarcoidosis. CMRI should be considered in all patients who have suspected findings for cardiac involvement.