[Interpretation of updated international guidelines for diagnosis and treatment of gastroenter-opancreatic neuroendocrine neoplasms].
2021
The incidence of neuroendocrine neoplasms (NEN) is continuously increasing with gastrointestinal tract and pancreas being the most common primary sites. Currently, the guidelines proposed by European Neuroendocrine Tumor Society (ENETS), National Comprehensive Cancer Network (NCCN), European Society for Medical Oncology (ESMO) and North American Neuroendocrine Tumor Society (NANETS) are being widely applied. Among these, ENETS and NANETS guidelines were proposed in 2017 while ESMO and NCCN recently updated their guidelines for gastroenteropancreatic NEN in 2020 and 2021, respectively. This article interprets the diagnosis and treatment of gastroenteropancreatic NEN based on the newly updated ESMO and NCCN guidelines. The diagnosis of gastroenteropancreatic NEN depends on histological assessment including morphological evaluation, grading and immunohistochemistry results. Combination of different imaging methods can help determine tumor staging and risk assessment. Decision-making of treatment and follow-up strategies is based on primary tumor site, tumor classification, tumor grade, tumor type, functional status etc.
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