Results: mean operating time was 275 ± 74.2 minutes; there was non-significant difference between pre and post-op blood count; non-blood-transfusion rate was 53.33%; mean volume of blood transfusion was 487.5 ±265.6 ml; ratio of thoroughly tumor resection under surgical microscope was 93.33%; there was no severe complications such as death or loss of consciousness; mean hospitalization time was 13.5 days.