Synchronous carcinoma of the ampulla of vater and colon cancer.

Carcinoma of the papilla of Vater is a relatively rare tumor and its coexistence with other primary sporadic cancers is very exceptional. Here we report the case of a 76-year-old man who presented with painless obstructive jaundice, pathologically elevated liver function tests and increased serum levels of carbohydrate antigen 19-9 and carcinoembryonic antigen. Endoscopic retrograde cholangiography revealed a large polypoid mass in the ampulla of Vater. A large tumor in the ascending colon was also incidentally detected by abdominal computed tomography. Endoscopic biopsies from both lesions showed adenocarcinomas. Metastases to the liver and to the hepatoduodenal ligament and hepatic artery lymph nodes were found during surgery. Right colectomy and a biliary bypass were performed. Histological analysis showed an ampullary adenocarcinoma with metastases to regional lymph nodes and the liver and a colonic adenocarcinoma with local invasion into the pericolic fat. Treatment with gemcitabine plus cisplatin was suggested postoperatively. The association of sporadic ampullary and colonic adenocarcinomas and the mutually increased risk of developing either a synchronous or a metachronous tumor following each other should be considered in patients with primary ampullary or colorectal cancer during the preoperative evaluation and postoperative follow-up of these patients.