腺境界近傍胃粘膜のX線的検討

Radiologic Evaluation of the Gastric Mucosa Near the F-line

要旨　腺境界の肉眼所見と組織所見の位置関係の比較には切除胃癌51例を用い，X線的胃小区と組織学的萎縮の程度との検討には1対1の対比が可能な36例（42区域）を任意に選択し，X線的な腺境界診断の指標を求めた．①肉眼的なF境界線（粘膜ひだ起始部の肛門側辺縁を結んだ）と組織学的F境界線は粘膜萎縮が軽度な胃では両者はほぼ一致するが，萎縮の程度が中等度な胃では必ずしも一致しない傾向がみられた．②X線的な腺境界診断は，粘膜ひだの肛門側起始部近傍あるいは，それより口側（大彎側）の粘膜に対しては，胃小区模様が指標になることがわかった．すなわち，顆粒の大きさの小型化，形の円形化，それらに大きさと形の不均一さが認められる場合には中間帯粘膜領域を考える必要がある．

　For the purpose of looking for the radiologic diagnostic indicators of the F-line, 36 cases (42 areas) were selected from 51 cases of the resected stomach with cancer from the viewpoints of comparability of the radiologic gastric area and degree of the histological atrophy. 1) Macroscopic F-line (circulatory line of the anal end of mucosal folds) of the stomach with mild atrophic mucosa was almost identical with histological F-line, but macroscopic F-line of the stomach with moderate atrophic mucosa was not always the same as the histological one. 2) Radiologic indicators for the F-line were the anal end of mucosal folds and the gastric area patterns of the oral (greater curvature) side of mucosa near the anal end of mucosal folds, that is, small, round and irregular granules of the mucosal area would suggest the intermediate mucosal band.