Bosniak M A, Megibow A J, Ambos M A, Mitnick J S, Lefleur R S, Gordon R
AJR Am J Roentgenol. 1982 Jun;138(6):1107-13. doi: 10.2214/ajr.138.6.1107.
Although hydronephrosis can usually be diagnosed by urography and/or pyelography, the etiology of the obstruction may not be apparent. Computed tomography (CT) is usually helpful in evaluation of these cases. In 36 cases in which CT was performed solely to determine the cause of ureteral obstruction of uncertain etiology, it proved to be of value in 33 instances (91.7%). The disease processes encountered in this series included metastatic carcinoma to the ureter or periureteral tissues(22), lymphoma (one), primary ureteral tumor (two), radiolucent ureteral stone (four), adjacent ileocolitis (two), aortic or iliac artery aneurysm (two), fibrous band(one), urinoma (one), and radiation fibrosis (one). In three cases (8.3%) an etiologic diagnosis could not be made by CT. These patients had radiation therapy to treat malignant disease, and recurrent tumor responsible for ureteral obstruction could not be distinguished from radiation fibrosis.
虽然肾积水通常可通过尿路造影和/或肾盂造影诊断，但梗阻的病因可能并不明显。计算机断层扫描（CT）通常有助于评估这些病例。在36例仅为确定病因不明的输尿管梗阻而进行CT检查的病例中，CT在33例（91.7%）中显示出价值。该系列病例中遇到的疾病过程包括输尿管或输尿管周围组织的转移性癌（22例）、淋巴瘤（1例）、原发性输尿管肿瘤（2例）、透X线输尿管结石（4例）、相邻回结肠炎（2例）、主动脉或髂动脉瘤（2例）、纤维带（1例）、尿瘤（1例）和放射性纤维化（1例）。3例（8.3%）病例CT无法做出病因诊断。这些患者曾接受放射治疗以治疗恶性疾病，导致输尿管梗阻的复发性肿瘤无法与放射性纤维化区分开来。
