胃glomus腫瘍の1例

Gastric Glomus Tumor, Report of a Case

要旨　患者は60歳代，女性．検診を目的に施行した胃内視鏡検査で胃前庭部に粘膜下腫瘍を指摘され，当科を受診した．胃X線検査ならびに胃内視鏡検査で胃前庭部大彎に径2cm大の立ち上がりのなだらかな粘膜下腫瘍を認め，表面性状は平滑であった．EUSでは，第4層内に11×10mm大の境界明瞭な腫瘤を認め，内部エコーは高～低エコーが散在し不均一であった．腹部CT検査では腫瘤が造影早期相から強く濃染された．腹腔鏡下胃局所切除術にて切除した標本の病理診断では，胃固有筋層内のglomus腫瘍と診断した．胃glomus腫瘍は前庭部に好発し，EUSで内部エコーは固有筋層より高く不均一で，造影CT検査で早期から強く濃染することが鑑別診断に有用と思われた．

　A case of a woman in her sixties. A gastric submucosal tumor was indicated by gastroscopy during a health checkup. X-ray examination and gastroscopy revealed a smooth-surfaced submucosal tumor at the greater curvature of the gastric antrum. Endoscopic ultrasonography showed a tumor, measuring 11×10mm, had a slightly higher echo level than the proper muscular layer and extended into the fourth layer. Abdominal computed tomography showed contrast enhancement of the tumor. Laparoscopic gastric partial resection was performed. We histologically diagnosed a glomus tumor. Our case showed characteristic diagnostic imaging.