ischiectomy

例句：

1. 1. He underwentan ischiectomy to treat his testicular cancer.
   他接受了睾丸切除术来治疗他的睾丸癌。
2. 2. The procedure was performed undergeneral anesthesia for the patient's comfort.
   为了患者的舒适，该手术在全身麻醉下进行。
3. 3. The doctorexplained that this type of surgery is necessaryfor the treatment of certain conditions.
   医生解释说，这种手术是治疗某些疾病的必要条件。