大彎側後壁Ⅱc型早期胃癌の1例

ONE CASE OF Ⅱc TYPE EARLY GASTRIC CANCER

Ⅰ．はしがき

　現在，表面陥凹型（Ⅱc型）早期胃癌診断の焦点は，1～2cm以下の小病変の発見にある．われわれは，大彎側後壁の小さなⅡc型早期胃癌例について，X線，内視鏡，および，病理組織学的所見を供覧し，2，3の検討を加えた．

　X-ray photographs, endoscopical findings and pathological (histological) findings of Ⅱc type early gastric cancer (S. N., 49, female) situated at posterior wall of gastric corpus the near greater curvature and 12×3 mm in size, were presented. Peroicl from the onset of syptom to the operation was six months. Macroscopical change was very small, but infiltration of cancer cell already reached to submucosal layer histologically. U1_Ⅱ type ulcus scar was noticed at the centre. Roentgenologically big mucosal fold gathered and broke at the centre of the cancer clearly, because cancer was situated near the greater curvature side and hardening change of infiltrating cancer was accompanied with it.

　This Ⅱc type change was affirmed by fluoroscopy. Usually, Ⅱc type cancer about 10 mm in size is restricted inside of mucous membrane and shows no or slight scar formation, but this case showed submucosal cancer infiltration and U1_Ⅱ type scar formation. This change was situated at posterior wall of the greater curvature side. Even this kind of change was able to reveal by double contrasted method. Histopathological findings may be supposed by roentgenologic image and fluoroscopic examination.