10例恶性输尿管阻塞经膀胱置双-J移植物无效后,改用自扩张金属支架,3例双侧输尿管内植入,7例为单侧。阻塞原因为直肠癌(4例)、子宫颈癌(3例)、卵巢癌(3例)。4条输尿管阻塞系癌局部复发,9条为骨盆或腹膜后淋巴结转移所致。阻塞及原因用CT确定。上尿道扩张用US或IVP评价。阻塞平均长7cm(3～17cm)。病人一般情况好,接受化疗或放疗。经皮肾造口术用 In 10 patients with malignant ureteral obstruction, the double-J graft was ineffective in the bladder and was replaced with a self-expanding metal stent. Three patients had bilateral ureteral implantation and 7 patients had unilateral. The causes of obstruction were rectal cancer (4 cases), cervical cancer (3 cases), and ovarian cancer (3 cases). 4 ureteral obstruction was local recurrence of cancer, and 9 were due to pelvic or retroperitoneal lymph node metastasis. Obstructions and causes were determined using CT. Upper urethral dilatation was assessed using US or IVP. The average length of obstruction is 7cm (3 to 17cm). The patient is generally in good condition and receives chemotherapy or radiotherapy. Percutaneous nephrostomy