pyloric ostium

例句：

1. 1. The surgeon performed a pyloric ostium biopsy to diagnose the patient's condition.
   外科医生进行了幽门开口活检以诊断患者的病情。
2. 2.The patient was admitted to the hospital with a pyloric ostium obstruction.
   患者因幽门开口阻塞被送进医院。
3. 3. The doctor recommended that the patient undergo surgery to relieve the pressure on the pyloric ostium.
   医生建议患者接受手术来缓解幽门开口的压力。