excision of brain tumor by cryosurgical method

例句：

1. 1. The surgeon performed an excision of the tumor.
   外科医生进行了肿瘤的切除手术。
2. 2. The patient needed an excision to remove the infection.
   病人需要切除来清除感染。
3. 3. The operation was successful, and the excision was performed by a skilled surgeon.
   手术成功，由一位熟练的外科医生执行了切除。