Update on Whole-body MRI Surveillance for Pediatric Cancer Predisposition Syndromes

Whole-body MRI (WBMRI) is an integral part of screening infants, children and adolescents for pre-symptomatic neoplasms in certain cancer predisposition syndromes (CPS). This includes Li-Fraumeni and Constitutional Mismatch Repair Deficiency syndromes, among others. The list of syndromes where WBMRI adds value, as part of a comprehensive surveillance protocol, continues to evolve in response to new evidence, growing experience and more widespread adoption of WBMRI. In July 2023, the American Association of Cancer Research (AACR) reconvened an international, multidisciplinary panel to revise and update recommendations stemming from the 2016 AACR Special Workshop on Childhood Cancer Predisposition. That initial meeting resulted in a series of publications in Clinical Cancer Research in 2017, including “Pediatric Cancer Predisposition Imaging: Focus on Whole Body MRI”. This 2024 review of WBMRI in CPS updates the 2017 WBMRI publication, the revised recommendations derived from the 2023 AACR Childhood Cancer Predisposition Workshop based on available data, societal guidelines and expert opinion. Different aspects of acquiring and interpreting WBMRI including diagnostic accuracy are discussed. Application of WBMRI in resource poor environments, as well as integration of whole-body imaging techniques with emerging technologies such as cell-free DNA, or liquid biopsies, and artificial intelligence/machine learning are also considered.