gasterechema

例句：

1. 1. He had a gastric calculus that was causing him significant pain.
   他有一个胃结石，这给他带来了严重的疼痛。
2. 2. The doctor advised him to undergo surgery to remove the gastric calculus.
   医生建议他接受手术来移除胃结石。
3. 3.Gastric calculus is a rare but serious condition that requires medical attention.
   胃结石是一种罕见但严重的状况，需要医疗关注。