The present invention provides a new method of ameliorating and/or treatingenteritis induced by radiation therapy, alone or in combination with othertherapies, for the treatment of, for example, gastrointestinal malignancies,including colorectal, appendiceal, anal, or small bowel cancers； urogenitalmalignancies, including prostate, ladder, testicular, or penile cancers；gynecologic malignancies, including cervical, endometrial, ovarian, vaginal,or vulvar cancers； or osteogenic and other sarcomatous malignancies in whichpelvic structures are involved, comprising the administration of atherapeutically effective amount of balsalazide to a patient in need thereof.
