A case of gastric endocrine cell carcinoma successfully treated by FU (5-FU/UFT) +irinotecan (CPT-11) adjuvant therapy against recurrent metastases is reported with some discussion. A 69-year-old man was admitted to our hospital with severe anemia. He was diagnosed with advanced gastric cancer, T3N1H0P0M0, Stage IIIa. Total gastrectomy with pancreato-splenectomy with D2 lymph node dissection was done for curative resection. The pathological diagnosis was gastric endocrine cell carcinoma because Grimelius and Chromogranin A stained positive histologically. Seven months after operation, recurrent liver metastases with tumor embolism of the portal vein were revealed by enhanced CT examination. FU (5-FU/UFT) +CPT-11 was done as the first-line adjuvant chemotherapy. Metastatic lesion of the liver and portal vein tumor embolism was decreased. Tumor marker CA19-9 level was also decreased and within normal limits. This therapy was evaluated as a partial response (PR) in twelve months and the patient died three years and eight months after operation. Gastric endocrine cell carcinoma is known as a potentially highly malignant tumor. But in our case FU+CPT-11 controlled growth of the recurrent tumor. Based on this finding, we recommend adjuvant chemotherapy by FU+CPT-11 for gastric endocrine cell carcinoma.
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