Tumors occurring in horseshoe kidneys are a rare clinical and pathological entity.1-3 A review of the literature, including the records of the Armed Forces Institute of Pathology, reveals only 47 cases. These are classified as follows: adenocarcinoma, 21; urothelial tumors, 13, including 4 squamous-cell and 9 transitional-cell tumors; nephroblastoma, 7, and miscellaneous, 6, including 4 "sarcoma," 1 hemangioma, and 1 rhabdomyosarcoma.
The tumors usually are confined to either segment of the horseshoe kidney.4-6 Recently we encountered a case of adenocarcinoma of a horseshoe kidney wherein the tumor involved the entire isthmus and extended into the midportion of each kidney. The unusual pathological features warranted report of this case.
Report of Case
A 36-year-old white man was first seen by his family physician in May, 1959, complaining of gross, total, painless hematuria of 3 days' duration. He also complained of a mild, dull ache in the midlumbar area. Positive
SHOUP GD, POLLACK HM, DOU JH. Adenocarcinoma Occurring in a Horseshoe KidneyReport of a Case and Review of Literature. Arch Surg. 1962;84(4):413-420. doi:10.1001/archsurg.1962.01300220037005