胃ポリープの悪性化を考えさせる1症例

A Case of the Malignant Change of Gastric Polyp

　胃ポリープの癌化については，古くから多くの報告¹⁾²⁾がみられる．レ線による追跡データでははじめから癌であったものが含まれている可能性があり，また病理組織学的にポリープ癌とされたものも，あくまでも推定されたにすぎない．そこで，最近10年間に急速に進歩した内視鏡検査法の導入により，多数のbiopsic followが試みられているが，ポリープの癌化例は意外に少なく，いまだその報告をみないように思われる．

　著者らは，生検結果から，ポリープの癌化を考えさせた興味ある1例を経験したので報告する．

　The reports on the malignant change of benign gastric polyps, are not a few, but there is considerable variation in the rate of the malignant changes according to the reporters, ranging from 0 to 66.8％. This variation considerably comes from the difference of the definition or the histological criteria. According to the recent follow-up studies with the biopsies, however, the malignant change can be said “exceptional”. We think it of interest, therefore, to report this exceptional case of gastric polyp-cancer which we recently experienced. In this case, a benign gastric polyp had already been pointed by barium meal roentgenologically 12 years prior to the first biopsic study which showed it benign, and the third repeated biopsic examination showed malignant change which proved by the histopathologic studies of resected specimens.