本文报告1例罕见的心脏原发性恶性纤维性组织细胞瘤如下:患者男性,36岁,于1973年6月因全身倦怠无力不适,诊断为右侧胸膜炎,经用抗菌素治疗而减轻。同年10月出现呼吸困难,X 线检查疑为右下肺后方肿瘤而行肺穿刺,胸水检查无异常,支气管脱落细胞学 This article reports a rare case of primary malignant fibrous histiocytoma of the heart as follows: A male patient, 36 years old, was diagnosed with right pleurisy due to general malaise in June 1973 and was relieved by treatment with antibiotics. Difficulties occurred in October of the same year. X-ray examination revealed a lung puncture on the right lower lung tumor. There was no abnormal pleural fluid examination.