A case of ileocolic intussusception from renal cell carcinoma

We report a case of ileal metastasis of renal cell carcinoma (RCC) in a 58- year-old male. The patient had a history of radical nephrectomy for a right RCC, and 2 years later underwent bilateral partial pneumonectomy for metas tatic disease of the lung. A period of 1 year after the partial pneumonecto my, he developed bloody stools. Colonoscopy revealed an ileocolic intussusc eption caused by a polypoid tumor in the ileum, and the tumor was observed to be protruding into the ascending colon. The histological features of the tumor biopsy specimen confirmed the diagnosis of metastatic RCC. Metastasi s of RCC in the small bowel is a rare disease clinically. To our knowledge, this is the first reported case with ileal metastasis of RCC, which has be en definitively diagnosed by colonoscopy.