抄録
A 81-year-old man was admitted to the hospital because of abdominal discomfort and vomiting. Marked stenosis in the 3rd portion of duodenum was observed by upper gastrointestinal series. Endoscopy revealed a protruded tumor with retention of foods. Preoperative serum levels of CA19-9 were high (260U/ml) . Operation performed a partial resection of the duodenum. Hisological examination revealed well to moderately differentiated adenocarcinoma with strongly stained to CA19-9 antibody.
We reported a case of primary adenocarcinoma of the horizontal portion of duodenum. This case suggested that CA19-9 might be the marker of the duodenal carcinoma.
