Myocardial sarcoidosis: a review.

Although, the diagnosis of myocardial sarcoidosis is difficult to establish clinically, the heart may be involved at autopsy in upto a third of cases of sarcoidosis. Cardiac sarcoidosis may remain occult, may present with arrhythmia, or may even cause sudden death. In order to avoid a diagnostic oversight, sarcoid heart disease should be considered in any patient with unexplained heart block, cardiac arrhythmia, or heart failure.