sigmoidectomy

例句：

1. 1. The patient underwenta sigmoidectomy forrectal cancer.
   这名患者因直肠癌接受了一次切除术。
2. 2. The surgeon performed a sigmoidectomy to remove the tumor.
   外科医生进行了一次切除术以移除肿瘤。
3. 3.The procedure was successful and the patient recoveredwell after the sigmoidectomy.
   手术成功，患者在切除肛门手术后恢复良好。