Occult Gastrointestinal Bleeding in a 15-Year-Old Pediatric Cancer Survivor.

Colorectal carcinoma (CRC) is rare in pediatrics, with an incidence of approximately 1 per million in children and adolescent patients (1). Risk factors include inherited diseases such as familial adenomatous polyposis (FAP), Lynch syndrome/hereditary nonpolyposis colon cancer, genetic microsatellit