An RCT for the Effect of Biofeedback Therapy the Prevention of AR Syndrome in Rectal Cancer Patients

Inclusion Criteria: * rectal cancer patients * neoadjuvant chemoradiation therapy (+) * sphincter saving surgery with total mesorectal excision (+) * temporary loop stoma (+) * adult who is 17 years or older * patinet who aggree with our study * if woman is childbearing age, her pregnancy test shoud be indentified 'negative' Exclusion Criteria: * patients who have been enrolled to other clinical studies related to this study * patients who underwent diverting stoma before neoadjuvant chemoradiation * temporary end -ostomy (+) * uncontrolled metabolic or systemic disease * patients who do not understand the purpose of this study because of dementia or pshycologic problem * MRSA or Clostridium difficille (+) * Pregnant or during breast feeding * serious complication after sphincter saving surgery