This is single arm study with historical comparison. The historical control group did not receiving nutritional support. In previous results show that about 25% complication rates. Complication rates are expected in the group receiving nutritional support is less than 10 % ( previous studies (NCCNCS-11-460)).
For support group, preoperative nutritional support is given for 5 or more days preoperatively by nutritional support program. Nutritional support program is briefly described below.
Interval: 5-10 days Contents: admission is required
* Calories: 30-35Kg, via enteral or parenteral
* Protein: 1.2-1.5g/Kg
* Lipid : 1-1.5g/Kg
* Mineral and vitamins supply
* Blood glucose control
* Daily monitoring by dietician and specialized nurse
