McCauley R G, Safaii H, Crowley C A, Pinn V W
Am J Dis Child. 1979 Nov;133(11):1174-7. doi: 10.1001/archpedi.1979.02130110082015.
Extrarenal Wilms' tumor is a rare entity usually seen as a mass in the retroperitoneal area. It may surround and distort otherwise normal kidneys and ureters. Like many other abdominal masses, its true nature remains uncertain until microscopic examination has been performed after surgery. The tumors appear to behave clinically like intrarenal Wilms' tumors, though in the cases reviewed there was a relatively higher incidence in older patients. The prognosis of extrarenal Wilms' tumor is difficult to evaluate due to the small numbers of cases reported and the differing tumor therapy used. However, those cases treated most recently appear to have a good response to therapy.
肾外威尔姆斯瘤是一种罕见的病变，通常表现为腹膜后区域的肿块。它可能会包绕并扭曲原本正常的肾脏和输尿管。与许多其他腹部肿块一样，在手术后进行显微镜检查之前，其真实性质仍不确定。这些肿瘤在临床上的表现似乎与肾内威尔姆斯瘤相似，不过在所回顾的病例中，老年患者的发病率相对较高。由于报告的病例数量较少且采用的肿瘤治疗方法不同，肾外威尔姆斯瘤的预后难以评估。然而，最近治疗的那些病例似乎对治疗有良好反应。
