European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence-informed and consensus-driven recommendations. Using a literature review and GRADE methodology, we address clinical evaluation, imaging pathology, genetics, surgical and systemic therapies, and long-term surveillance. Surgical resection is the cornerstone in localized disease. Systemic treatments are largely adapted from adult data, including somatostatin analogues, radiopharmaceutical therapy, and targeted agents. Multidisciplinary care, genetic counseling, and lifelong follow-up are essential to optimize outcomes.