探讨原发性左心室肿瘤的诊断和治疗。方法本组５例中，术前经超声心动图明确诊断４例，经胸部ＣＴ确诊１例。胸部正中切口、低温体外循环下手术４例，左前外切口、非体外循环下手术１例。结果多发性粘液瘤２例，横纹肌瘤、纤维瘤和神经鞘瘤各１例；死亡１例，存活４例，随访１．３～１５年，无复发和转移征象。结论原发性左心室肿瘤多为良性，胸部ＣＴ在外生型肿瘤的诊断中具有重要价值，手术效果良好 To investigate the diagnosis and treatment of primary left ventricular tumors. Methods In this group of 5 cases, 4 cases were confirmed by echocardiography before operation, and 1 case was diagnosed by chest CT. Incision in the chest, hypothermia underwent extracorporeal circulation in 4 cases, left anterior incision, and 1 case under non-extracorporeal circulation. Results There were 2 cases of multiple myxoma, 1 case of rhabdomyosarcoma, fibroma and schwannoma, 1 case of death, and 4 cases of survival. There was no sign of recurrence and metastasis after 1.3 to 15 years of follow-up. Conclusion Most primary left ventricular tumors are benign. Chest CT has important value in the diagnosis of exogenous tumors.