This document discusses the classification and characteristics of cardiac neoplasms. It notes that primary cardiac tumors are rare, with secondary cardiac tumors from metastasis or direct spread being 30 times more common. The most frequent primary benign cardiac tumors are myxomas, lipomas, and papillary fibroelastomas. Angiosarcomas and rhabdomyosarcomas are the most common primary malignant cardiac tumors. Diagnosis is typically made using echocardiography, and treatment involves surgical resection with the aim of clear margins while avoiding tumor embolization.