Kumar S, Bhandari M
Br J Urol. 1985 Aug;57(4):399-401. doi: 10.1111/j.1464-410x.1985.tb06296.x.
The surgical treatment of circumcaval ureter (type I) should eliminate the ureteric obstruction which is of variable causation. At operation, the aetiology of the obstruction can be determined by inspection of the extent of ureteric dilatation, perfusion-pressure study and calibration of the lumen. Using this approach, the cause of the obstruction was found to be nonstenotic intrinsic obstruction of the retrocaval segment in two cases of type I circumcaval ureter. In these patients, resection of the obstructing segment and uretero-ureterostomy were carried out. The third patient had pelviureteric junction stenosis which was treated by dismembered pyeloplasty after ureteric relocation.
腔静脉后输尿管（I型）的外科治疗应解除病因各异的输尿管梗阻。手术时，可通过检查输尿管扩张程度、灌注压力研究及管腔校准来确定梗阻的病因。采用这种方法，在两例I型腔静脉后输尿管患者中，发现梗阻原因是腔静脉后段非狭窄性内在梗阻。对这些患者实施了梗阻段切除及输尿管输尿管吻合术。第三例患者存在肾盂输尿管连接处狭窄，在输尿管重新定位后，采用离断性肾盂成形术进行治疗。
