第四版WHO(2015)心脏肿瘤组织学分类(简称新版)与2004年第三版的内容比较变化不大。心脏原发性肿瘤发病率较低,其中近90%为良性肿瘤,最多的是黏液瘤,约占所有心脏肿瘤的70%~80%,其次为发生于婴幼儿的横纹肌瘤~([1,2])。心脏原发性恶性肿瘤仅占10%,主要为肉瘤,其中 Fourth edition WHO (2015) Cardiac tumor histological classification (referred to as the new version) and the third edition of 2004 content changes little. The incidence of primary heart cancer is low, of which nearly 90% of benign tumors, the most common is myxoma, accounting for about 70% to 80% of all cardiac tumors, followed by infantile rhabdomyoma ~ ([1, 2]). Cardiac primary malignancy only accounts for 10%, mainly sarcoma, among them