A tumor is any type of abnormal growth, whether cancerous (malignant) or noncancerous (benign). Primary heart tumors are tumors that originate in the heart. Which of the following is the most common type of noncancerous primary heart tumor in adults?
Myxomas that develop from the heart wall tissue
Mesotheliomas that develop from the membrane covering the heart
Metastasized breast, lung and skin cancers
Sarcomas that develop from connective tissue
