<prompt> Most common primary tumor of hea?MyxomaRhabdomyosarcomaFibromaLeiomyosarcoma  <response>: Primary cardiac tumors are uncommon moreover, most also are benign. The descending order of frequency , these are myxomas, fibromas, lipomas, papillary fibroelastomas,rhabdomyomas Myxomas are the most common primary tumor of the adult hea. Robbins 9 th edition page no. 404 