输尿管周围炎又称腹膜后纤维化 ,其病理特征为围绕输尿管及邻近大血管周围大量纤维组织增生、胶原沉积 ;分为原发性和继发性两大类。原发性系自身变态反应引起的大血管病变 ,以动静脉粥样硬化为主。当血管周围渗出物被吸收后 ,纤维母细胞增生、胶原沉积 ,形成纤维组织 ,压迫血 Periurepithelial inflammation, also known as retroperitoneal fibrosis, the pathological features around the ureter and adjacent large vessels around a large number of fibrous tissue proliferation, collagen deposition; divided into primary and secondary categories. Primary Department caused by their own allergic macrovascular disease, mainly to atherosclerosis. When perivascular exudate is absorbed, fibroblast proliferation, collagen deposition, the formation of fibrous tissue, oppression of blood