Oral Probiotics on Radiation Enteritis Stage Ⅱ Induced by Pelvic Concurrent Chemoradiotherapy

Inclusion Criteria: * Karnofsky score ≥80 pelvic tumor patients receiving chemoradiotherapy in our Cancer Center Exclusion Criteria: * any immune system disease under high risk to antimicrobial agents such as Diabetes,infection disease or drug allergy to Probiotics