[Primary cardiac malignant mesenchymal tumor containing chondrosarcomatous component--a case report].

A case of 70 years old female bearing a primary cardiac tumor was presented. Mitral valve replacement and reconstruction of the interatrial septum were necessary because the tumor originated from the left atrial side of the interatrial septum and invaded the anterior mitral valve leaflet and around the annular area. Pathological examination of the resected specimens revealed mesenchymal tumor containing chondrosarcomatous component. The patient received radiation therapy (50 Gy) postoperatively and she resumed normal daily activity. Preoperative echocardiographic manifestations were of proved benefit in the diagnosis of malignant cardiac tumor and a proper therapeutic strategy could be chosen.