A Case of Multiple Primary Cancer in Stomach and Duodenum / 대한소화기내시경학회지

Double primary cancer is defined as the case of primary malignant tumors of different site origins, which are different histologically in each other. The number of reported cases of multiple primary malignant tumors has increased in recent years, of more developed diagnostic procedure and long survival of cancer patients. Malignant tumors of the small bowel are reported to account for about 1% of all gastrointestinal carcinomas. We have experienced a case with double primary malignant tumors of gastric adenocarcinoma and duodenal adenocarcinoma. For its great rarity, we report this case with review of literatures.