gastric ostium

例句：

1. 1. The surgeon performed a gastrectomy to remove the tumor.
   外科医生进行了胃切除术以切除肿瘤。
2. 2.The patient was admitted to the hospital for further treatment of the gastric ulcer.
   患者因胃溃疡被收治入院接受进一步治疗。
3. 3. The doctor advised the patient to avoid spicy and greasy foods while recovering from the gastric surgery.
   医生建议患者在胃手术后避免食用辛辣和油腻的食物。