Reed H M, Robinson N D
Urology. 1984 Jan;23(1):62-4. doi: 10.1016/0090-4295(84)90179-1.
The simultaneous occurrence of invasive renal pelvic carcinoma with hydronephrosis and multiple calculi was noted after resection of the involved left renal unit of a horseshoe kidney. A perirenal lymph node submitted with the specimen was also involved necessitating a "second look" with retroperitoneal lymph node dissection and removal of left lower ureter and cuff of the bladder, all of which were benign. The increased incidence of renal pelvic tumors with horseshoe kidney is discussed. While the occurrence of adenocarcinoma in a horseshoe kidney appears to be no higher than in nonfused kidneys, the incidence of transitional cell carcinoma among horseshoe tumors is higher (24% vs. 7.7% in nonfused kidneys).
马蹄肾左侧受累肾单位切除术后发现侵袭性肾盂癌合并肾积水和多发结石。送检标本中的一个肾周淋巴结也受累，因此需要进行“二次探查”，行腹膜后淋巴结清扫，并切除左下腹输尿管及膀胱袖口组织，结果均为良性。文中讨论了马蹄肾肾盂肿瘤发病率增加的情况。虽然马蹄肾中腺癌的发生率似乎并不高于非融合肾，但马蹄肾肿瘤中移行细胞癌的发生率更高（分别为24%和非融合肾中的7.7%）。
