Abstract
We report a case of CA19-9-producing gastric cancer. An 81-year-old man had tarry stools and high serum CA19-9 values Gastro-intestinal endoscopy showed a type3 lesion in the lower third of the anterior wall of the gastric body. Blopsy examination suggested moderately differentiated adenocarcinoma. Distal gastrectomy was performed. A gastric tumor had invaded the serosa and two liver metastases were observed. On immunohistochemistry, cancer cells stained positive for CA19-9. The serum CA19-9 level deceased to normal range in the first postoperative month. He rejected adjuvant chemotherapy. At three months after the operation, the serum CA19-9 level had risen and multiple skin metastases of the head, abdominal wall and Achilles tendon were detected. Chest CT showed multiple lung metastases. The patient died 6months after the operation.
