巨输尿管(Megaureter)一词在1923年Caulk首先采用,以后被各家泛指各种原因引起的梗阻或膀胱输尿管回流引起的输尿管扩大.先天性巨输尿管(Megaloureter)专指先天性的输尿管扩大.临床上输尿管扩大是恒定的病理改变,病因甚多,除常见的梗阻性疾患(结石、肿瘤、结核等)容易诊断外,其它一些病因应很好辨认,以便作出确切的治疗.梗阻引起的输尿管扩大有些作者称之谓输尿管积水 The term Megaureter was first introduced in Caulk in 1923 and has since been used by a variety of reasons as obstruction or ureteral enlargement due to vesicoureteral reflux.Megaloureter specifically refers to congenital ureteral enlargement. Clinically, ureteral enlargement is a constant pathological change, many causes, in addition to common obstructive disorders (stones, tumors, tuberculosis, etc.) easy to diagnose, the other causes should be well identified in order to make the exact treatment. Obstruction caused by ureteral Enlarge Some authors call it Hydrosalpinx