Abstract: This report describes a 79-year-old male patient who underwent surgical treatment for clear cell renal cell carcinoma of the right kidney ten years ago.He was recently diagnosed with duodenal metastasis from the tumor,involving the junction of the bulb and descending portion.He received treatment with distal gastrectomy and partial duodenectomy followed by Billroth Ⅰ anastomosis,and was discharged from hospital.This case provides an overview of clinical symptoms,rare metastases,and treatment strategies to serve as a reference for future clinical practice.

Key words: clear cell renal cell carcinoma, duodenal metastasis, BillrothⅠ anastomosis