Clinical Research Directory

Inclusion Criteria: 1. Histopathologically confirmed diagnosis of abdominal or pelvic cancer; 2. Completion of at least one entire course of radiation therapy; 3. Age ≥18 years at the time of cancer diagnosis. Exclusion Criteria: 1. Absence of intestinal symptoms or transient intestinal symptoms; 2. Radiation treatment involving areas outside the abdomen and pelvis; 3. Diagnosis of antibiotic-associated diarrhea or use of antibiotics within four weeks before enrollment; 4. Presence of intestinal comorbidities, including inflammatory bowel disease or pseudomembranous colitis; 5. Presence of severe conditions rendering the patient unsuitable for inclusion; 6. Experience of bowel surgery for RE-associated fistula.