sphincterectomy

例句：

1. 1. The patient underwent sphincterotomy to relieve the pain.
   患者接受了括约肌切除术以缓解疼痛。
2. 2.The procedure is known as proctectomy and involves removing the large intestine.
   这种手术被称为结直肠切除术，涉及移除大肠。
3. 3. The doctor advised the patient to undergo sphincterotomy for better recovery.
   医生建议患者接受括约肌切除术以便更好的恢复。