What is your approach to a patient who has a cardiac PET scan suggestive of sarcoid but no other supporting evidence of a diagnosis of sarcoid?

The diagnosis of cardiac sarcoidosis (CS) can be challenging, as non-necrotizing granulomatous inflammation is frequently patchy, and as a result, may not be present on endomyocardial biopsy even in the setting of active cardiac disease. Many institutions, including ours, attempt to avoid endomyocar...