excision of lymphnodes of mediastinum

例句：

1. 1. The surgeon performed the excision of the tumor.
   外科医生进行了肿瘤的切除。
2. 2. The patient underwent an excision for a skin cancer.
   病人因皮肤癌接受了切除手术。
3. 3. The operation was successful and the wound healed without any further excision.
   手术成功，伤口愈合无需进一步切除。