In patients undergoing hematopoietic stem cell transplantation, current evidence comparing enteral nutrition to parenteral nutrition shows which of the following?

• A. Enteral nutrition consistently improves survival over parenteral nutrition.
• B. Parenteral nutrition has been shown to reduce infection rates compared with enteral nutrition.
• C. There is insufficient data to establish a clear benefit; one study suggested parenteral nutrition may increase survival in allogeneic patients.
• D. Enteral nutrition increases mortality compared with parenteral nutrition.

Answer: (C)