Follow up to October 2000, the actuarial 1 year, 3 year, and 5 year survival rate were 80%, 68.3%, and 38.3%, respectively.

• 随访至 2 0 0 0年 10月 ；术后 1年、3年、5年生存率分别为 80%25、6 8.；3%25和 38