Colon Cancer Recurrence Mimicking Renal Cell Carcinoma

Colorectal cancer (CRC) is one of the most common gastrointestinal cancers in the world. In Malaysia, it is the third most common cancer for both men and women. Curative surgical resection with en bloc removal of the regional lymph nodes remains the mainstay of treatment with 5-year survival rate of 70%-90% for local disease. 1 Nonetheless, about 1 in 3 curatively treated CRC patient will suffer from local recurrence or metastasis . 2 Among the usual sites of recurrence are liver, lungs, local and/or regional intraabdominal and retroperitoneal lymph nodes. 3 We report a rare case of colon cancer recurrence to the left kidney after curative surgery and adjuvant therapy, which mimicked left renal cell carcinoma.