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현진해(Jin Hai Hyun),류호상(Ho Sang Ryu),이중건(Choong Keun Lee),김창덕(Chang Duck Kim),박균철(Kyun Chul Park),조인식(In Sik Cho),김의경(Eui Kyeong Kim),김남성(Nam Seong Kim),이재동(Jae Dong Lee) 대한소화기학회 1988 대한소화기학회지 Vol.20 No.3
It is common to define double primary cancer as the case of primary malignant tumors of different histologic site origins in each other. Etiology of double primary cacer is not known exactly but there are many contributing factors and theories about double primary cancer development. Owing to advancement of diagnostic procedure, reported cases of double primary malignant tumors have been increased in number. But occurance rate of multiple prirnary malignant tumors is relatively rare. We report the two cases, which we have confirmed double promary malignant tumors of different site origins such as esophageal squamous cell carcinoma and stomach adenocarcinoma with gastric fiberoptic endoscopic biopsy.