Abstract
Abstract: We describe a case of duodenal carcinoid tumor associated with carcinoma of the head of the pancreas. The patient was a 77‐year‐old man who was admitted to our hospital with jaundice and pruritus cutaneous. Carcinoma of the head of the pancreas was diagnosed on the basis of findings obtained by abdominal computed tomographic scan and endoscopic retrograde cholangiopancreatography. Upper gastrointestinal endoscopy revealed a protrusive hemorrhagic lesion with a flushed surface and a diameter of about 1 cm in the anterior wall of the duodenal bulb. On May 25, 1996, pancreaticoduodenectomy was performed. On histopathological examination, this carcinoma of the pancreatic head was found to be a well‐differentiated tubular adenocarcinoma. Immunohisto‐chemically, the protrusive lesion in the duodenal bulb stained positive for chromogranine and IMSB and was slightly positive for S‐100 protein. It was also slightly positive on Grimelius staining and negative on Masson‐Fontana staining. These findings led to a diagnosis of carcinoid tumor arising from the anterior intestinal line.
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