[Renal metastasis originating from colon cancer : a case report]

In 2008, a 65-year-old woman was referred to our department because of a right renal tumor detected by computed tomography (CT) that was associated with macroscopic hematuria. She underwent right hemicolectomy for ascending colon cancer in 2003, and right lower lobectomy for lung metastasis of colon cancer in 2004. CT, magnetic resonance imaging, fluorodeoxyglucose positron emission tomography computed tomography and bone scintigraphy did not indicate any other metastatic lesion except the right renal mass ; therefore, open right nephrectomy was performed. Results of the histopathologic examination demonstrated renal metastasis of colon cancer. Although administration of chemotherapy was continued, the patient died of multiple metastases 8 months after the right nephrectomy.