Therapy-Associated Polyposis in Pediatric Cancer Survivors.

Area of Science:

• Oncology
• Gastroenterology
• Pediatric Hematology/Oncology

Background:

• Childhood cancer survivors require lifelong monitoring for long-term health risks.
• Therapy-associated polyposis (TAP) is an emerging concern in this population.

Purpose of the Study:

• To report cases of young adult survivors developing colon polyps post-cancer treatment.
• To highlight the potential link between specific cancer therapies and polyp development.

Main Methods:

• Case series reporting on three childhood cancer survivors.
• Review of medical histories including cancer type, treatment (chemotherapy, radiation), and subsequent colonoscopy findings.

Main Results:

• Three survivors developed colon polyps (tubular adenomas) in their teens/twenties within 10 years of treatment completion.
• No family history or germline mutations for colon cancer were identified.
• Survivors had received high-dose cyclophosphamide equivalent doses (CED) chemotherapy, with some also receiving radiation.

Conclusions:

• Suggests a diagnosis of therapy-associated polyposis (TAP) associated with alkylating agents and radiation.
• Emphasizes the need for heightened clinical awareness of TAP in childhood cancer survivors.