Mesenchymoma of the left atrium

Abstract

Mr.M.H. 27 years old, is referred with symptoms and signs of inflow portion obstruction of the left heart. Laboratory test and echocardiography confirmed this diagnosis and revealed the presence of a tumor involving left atrium and mitral valve. The patients underwent operation and a tumor of left atrium with adhesion to the base of mitral valve posterior leaflet and another mass which existed on the mitral valve anterior leaflet were taken out. Histopathological examination of the tumor led to the diagnosis of mesenchymoma. Mesenchymoma is one of the rare connective tissue tumors and even more rarely is observed in the heart. Rare cases of cardiac mesenchymoma have been reported in literature since 1966 (A.D.) and this is the first case of mitral valve mesenchymoma to be introduced to literature.