微小Ⅱa型早期大腸癌の1例

A Case of the Minute Ⅱa Type Early Colonic Carcinoma

　最近われわれは2年4ヵ月の経過検査後手術した，微小Ⅱa型早期大腸癌を経験したので報告する．

症例

　患　者：K. O.　62歳　男性

　主　訴：上腹部膨満感

　家族歴：祖父，胃癌にて65歳で死亡，父；脳卒中にて45歳で死亡．

　既往歴：特記すべきことなし

　現病歴：1974年末より上腹部膨満感あり，近医にて胃X線検査の結果，腸癒着があるといわれ治療を受け，一時軽快した．1975年8月再び上腹部膨満感を訴え，同医にて治療を受けたが症状改善せず，精査の目的で1975年12月当センターを紹介された．この間便通は3日に1度であった．

　A case of the minute Ⅱa type early colonic carcinoma measured 0.6×0.4 cm was reported. With four times colonic mucosal biopsies, the lesion finally turned out to be adenocarcinoma.

　1) During the course, marked growth of the lesion had not been noted, while the central depression had extended a little.

　2) We could not diagnose the lesion to be carcinoma definitely with the findings obtained from barium enema examinations, colonoscopies, and magnifying colonoscopy.

　3) Colonic mucosal biopsies had been attempted four times. The first to third biopsies showed atypical cells classified as group 3 histologically. The fourth biopsy,28 months after the first one, was finally diagnosed as adenocarcinoma histologically.