[Sarcoidosis of the heart].

In 2 patients arrhythmias and conduction disorders were the first symptoms at presentation of cardiac sarcoidosis. One patient with severe conduction disorders showed normalisation of the EKG during steroid treatment. The other patient developed an overall cardiomyopathy and the arrhythmia was treated with conventional drugs. The frequency of cardiac involvement in sarcoidosis is much higher than that of clinical symptoms of sarcoid heart disease. Cardiac sarcoidosis is increasingly diagnosed in the last few decades. In most cases, it presents with sudden death, arrhythmia, conduction disorders or cardiomyopathy. The main diagnostic pathological feature is evidence of noncaseating granulomas, but mononuclear cell infiltration and focal interstitial fibrosis have also been found. The basal part of the interventricular septum is particularly prone to involvement. If conventional therapy in clinically important cases proves inadequate, steroid therapy should be added. It is recommended to make an EKG in every patient presenting with sarcoidosis even in the absence of cardiac symptoms. Sarcoid heart disease should be considered in every patient with diagnostic sarcoidosis and heart disease but also in every case of difficult heart disease without an obvious aetiology. Because of the relatively early age at onset, life expectancy is shortened.