Fibroelastosis of the right ventricle in two brothers of triplets.

We present an autopsy report of endocardial fibroelastosis of the right heart in two brothers of triplets. Beside this anomaly no other macroscopical malformations in the hearts were found. Morphologically an unusual hypertrophy of the subendocardial myocardiocytes in the right heart was observed. A history of tocolysis (sympathomimetic drugs for treatment of premature labour) was the main reason for publishing this case report. We could not answer the question if the drug was causative or only coincident with the observed lesions.