2011 Volume 44 Issue 9 Pages 1111-1117
We report a case of mucinous adenocarcinoma of the duodenum in a 79-year-old woman. The patient was admitted to our hospital because of anemia. Upper gastrointestinal endoscopy and a barium meal showed an irregular ulcerative lesion in the anterior wall of the duodenal bulb. Biopsy yielded a diagnosis of well differentiated adenocarcinoma. After the preoperative examination, we performed pancreatoduodenectomy. Pathological findings revealed mucinous adenocarcinoma. Mucin stain for MUC5AC and MUC6 were both positive, but MUC2 was negative. We therefore diagnosed gastric-type adenocarcinoma. We reviewed 10 Japanese cases of mucinous adenocarcinoma of the duodenum and analyzed the clinicopathologic features.
