Abstract
This paper deals with a case of metastasis of a renal cell carcinoma to the ascending colon. The patient was a 66-year-old man who had undergone a left nephrectomy for renal cell carcinoma 3 years prior. He was admitted due to hematochezia and dizziness. The CT scan revealed a mass lesion with enhancement located at the ascending colon, enlargement of the right adrenal gland, and tiny tubercl shadows in the lungs. On colonoscopy, a soft and elevated hemicircular lesion was found in the ascending colon. The differential diagnosis included renal cancer metastasis or a mesenchymal tumor ; a definitive diagnosis could not be made based on the biopsy specimen. The patient developed hematochezia related to the tumor ; a laparoscopic-assisted right hemicolectomy was done. A renal cancer colonic metastasis was diagnosed based on pathology. Four months after the operation, multiple lung metastases, and metastasis to the right adrenal gland and pancreatic tail were found. The patient was given interferon-α and sunitinib and survived for four years. Renal cancer colonic metastasis of is relatively rare. We report this case and review the relevant literature.
