Resected colonic metastasis from renal cell carcinoma

Abstract

In Janulary 2005, a 79-year-old female had a radical nephrectomy and partial resection of the transverse colon, spleen and pancreas tail due to renal cell carcinoma with transverse colon invasion. She experienced melena 1.4 years after nephrectomy. The descending colon occuluded by the type 1 tumor with necrotic surface was noted on the barium enema study and colonoscopy, hypervascular features were seen on computed tomography (CT) scanning. On biopsy, necrosis and granulation without malignant findings were noted. Suspicious of colon cancer with a lung metastasis, the colon was partially resected, pericolonic lymphnodes were also resected. Postoperative histopathological findings showed that the two tumor had metastasized from a renal cell carcinoma. Metastatic tumors from renal cell carcinoma to the colon are rare ; only 8 cases have been reported in the Japanese literature.