肺母细胞瘤是一种罕见的恶性肿瘤。因其发病似肾母细胞瘤故名肺母细胞瘤，对该病的认识争论已久。笔者现报告一例经手术和病理证实的肺母细胞瘤。患者，男，24岁。因全身关节疼痛，讲状指，胸透时发现左上肺有一巨大块影，边界清楚，拟诊左上肺肿块住院。手术时发现左肺上叶、 Pulmonary blastoma is a rare malignant tumor. Due to its onset of nephroblastoma named pulmonary blastoma, the understanding of the disease has been debated for a long time. The author now reports one case of pulmonary blastoma confirmed by surgery and pathology. Patient, male, 24 years old. Because of joint pain in the whole body, the speech means that when the chest chest was discovered, there was a huge shadow of the left upper lung, the boundary was clear, and the left upper lung mass was diagnosed as hospitalized. Left upper lobe was found during surgery.