A rare case of duodenal adenocarcinoma.

Duodenal adenocarcinoma is very rare. Its clinical picture is nonspecific and the diagnosis is often accidental. The factors that affect survival are difficult to determine because the number of patients is not high. The common site of duodenal tumors and surgical removal are also debatable. The treatment guidelines published so far have mostly been evaluated in retrospective studies conducted over a 20-year period with relatively small sample sizes. The author presents a case of duodenal adenocarcinoma in a 62-year-old male patient with a clinical manifestation of melena. Duodeno-cephalo-pancreatectomy was the surgical option.