肾脏巨大囊性畸胎瘤临床十分少见,现将我科诊治的一例报告如下。患者,女,50岁。腰背部酸胀痛2年余,服药可以缓解,无尿频、尿急、尿痛,也无血尿。近半年常感乏力,胸闷、心慌、出冷汗等。1998年7月22日外院Ｂ超及ＣＴ诊断为右腹膜后肿瘤。1998年8月18日入院。查体:腹部微隆,右侧 The giant cystic teratoma of the kidney is rare in clinical practice. Now a case report of our department is reported below. Patient, female, 50 years old. Low back pain for more than 2 years, medication can be relieved, no urinary frequency, urgency, dysuria, and no hematuria. In the past six months, I often felt fatigue, chest tightness, palpitation, and cold sweats. On July 22, 1998, B-ultrasound and CT were diagnosed as right retroperitoneal tumors. He was admitted to hospital on August 18, 1998. Physical examination: abdominal microlong, right