Carcinoid tumor of the kidney is extremely rare neoplasm. The tumor occurs equally frequently in men and women and appears to have no age, or sire predilection, but it generally exhibits a less aggressive biologic behabior than renal cell carcinoma. Only three of the carcinoid tumors were reported on have arisen in horseshoe kidney. Because of the scarcity of the lesion, prognosis and characterized, feature are not well characterized, and histogenesis is unknown. We report a case of primary carcinoid tumor found in a 43-year-old man with a horseshoe kidney. This is the first case of cacinoid tumor arising in horseshoe kidney documented in Korea.
Adult ; Carcinoid Tumor* ; Carcinoma, Renal Cell ; Female ; Humans ; Kidney* ; Korea ; Male ; Prognosis