原发性心包间皮肉瘤是罕见的心包恶性肿瘤。迄今为止,国外报道120多例,国内报道4例。我院仅发现一例,报告如下: 患者男性,44岁。在体检中发现“纵隔肿物”10年,气短、胸痛10天住院。体检:右胸前区,第2肋间以下,心右缘外侧,腋前线以内,叩诊实音。局部呼吸音减弱,肺肝界不清。心率82次/min。 心电图:不完全右束枝传导阻滞。B型超声:右心房外侧巨大实质性非均质回声,圆形,直径12cm, Primary pericardial mesothelioma is a rare pericardial malignancy. So far, more than 120 cases have been reported abroad, and 4 cases have been reported domestically. Only one case was found in our hospital. The report was as follows: The patient was male and was 44 years old. In the physical examination, “mediastinal mass” was found for 10 years, and shortness of breath and chest pain were hospitalized for 10 days. Physical examination: right chest area, below the second intercostal space, outside the right side of the heart, within the front line, percussion sound. The local breath sounds weakened and the lungs and livers became unclear. Heart rate 82 beats/min. Electrocardiogram: incomplete right bundle branch block. B-mode ultrasound: massive substantive anisotropic echo outside the right atrium, round, 12 cm in diameter,