[A Case of Duodenal Papilla Cancer 22 Years after Total Proctocolectomy for Familial Adenomatous Polyposis].

Familial adenomatous polyposis has an autosomal dominant pattern of inheritance. Colon cancer occurs frequently as a result of colorectal adenoma. The standard treatment is total proctocolectomy. However, it is reported that duodenal papilla cancer and desmoid tumors can also occur alongside colon cancer. We report a patient with duodenal papilla cancer who underwent total proctocolectomy 22 years previously. The patient was a 47-year-old man who had undergone a total proctocolectomy at the age of 25 years for familial adenomatous polyposis. On abdominal CT, duodenal papilla cancer that was suspected to be malignant was found. Using single-balloon enteroscopy, duodenal papilla cancer was diagnosed and pancreatoduodenectomy was performed. Seventeen months after surgery, liver and lung metastases were diagnosed. We began to provide palliative treatment, but the patient died 7 years 10 months after surgery.