Primary leiomyosarcoma of the heart subsequent to double carcinomas of thethyroid and lung

A 63-year-old woman underwent surgical operations for left lower lung cance r and for thyroid cancer. Nine months later, a third cancer developed in he r heart and this tumor was removed by open heart surgery. A pathologic stud y revealed that the tumor was primary leiomyosarcoma of the heart and thus independent from the previous lung and thyroid carcinomas. This case was re garded as a triple carcinoma including a primary leiomyosarcoma arising fro m the left atrium. Reports in the literature on primary malignant tumors of the heart are reviewed briefly.