LaMasters D, Katzberg R W, Confer D J, Slaysman M L
AJR Am J Roentgenol. 1980 Jul;135(1):79-82. doi: 10.2214/ajr.135.1.79.
An uncommon cause of late ureteric obstruction in renal transplants is fibrosis involving the allograft pelvis and ureter. Three new cases are reported, emphasizing a characteristic radiographic appearance of marked generalized narrowing of the renal pelvis and ureter with concomitant dilatation and hydronephrosis of the calyceal system. This unique pattern of obstruction is the result of infiltration of the transplant ureter and pelvis by fibrous tissue. Although the exact stimulus that incites this intense fibrotic scarring is unknown, ischemia, rejection episodes, and infection have been implicated. When properly diagnosed, conservative urologic management, with ureteral stenting and dilatation, is usually adequate to maintain transplant function.
肾移植术后晚期输尿管梗阻的一个罕见原因是同种异体移植肾肾盂和输尿管的纤维化。本文报告了3例新病例，强调了一种特征性的影像学表现，即肾盂和输尿管明显广泛性狭窄，同时伴有肾盏系统扩张和肾积水。这种独特的梗阻模式是移植输尿管和肾盂被纤维组织浸润的结果。尽管引发这种强烈纤维化瘢痕形成的确切刺激因素尚不清楚，但缺血、排斥反应和感染被认为与之有关。当诊断正确时，采用输尿管支架置入和扩张的保守性泌尿外科处理通常足以维持移植肾功能。
