胃的幽门部位，由于溃疡或癌瘤等病变所致的食物和胃液通过障碍。主要症状有上腹胀痛、呕吐大量宿食等gastric outlet obstruction

• 幽门梗阻、晚期胃癌病人常出现臭鸭蛋味口臭。

  Patients with gastric outlet obstruction or in the late stages of stomach cancer often develop bad breath that smells like rotten duck eggs.

• 这么大的头发团，必须尽快取出来，否则可能会导致孩子幽门梗阻等疾病。

  A hairball this large must be removed as fast as possible. If not, it may cause conditions such as gastric outlet obstruction in the child.