Journal
JOURNAL OF CLINICAL MEDICINE
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/jcm10122638
Keywords
pancreatic neuroendocrine neoplasms (PanNENs); endoscopic ultrasonography (EUS); endoscopic ultrasound-guided fine needle aspiration (EUS-FNA); endoscopic ultrasound-guided fiducial placement; endoscopic ultrasound guided tattooing; ethanol ablation; radiofrequency ablation (RFA)
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Pancreatic neuroendocrine neoplasms (PanNENs) are rare but their incidence has increased significantly. Endoscopic ultrasound (EUS) is crucial for diagnosis and prognostic stratification, with a well-demonstrated correlation between Ki-67 proliferation index values and tumor grading on EUS and surgical specimens according to the WHO 2017 classification. EUS also serves as a guide for preoperative sampling and interventions, with the possibility of locoregional ablative treatments in selected patients unfit for surgery.
Pancreatic neuroendocrine neoplasms (PanNENs) are relatively rare, but their incidence has increased significantly in the last decades. Precise diagnosis and prognostic stratification are crucial for proper patient management. Endoscopic ultrasound (EUS) is the modality of choice for diagnosis of solid pancreatic tumors, showing a higher tumor detection rate than other imaging modalities, especially for small size lesions. EUS also serves as a guide for preoperative sampling and other interventions. EUS-tissue acquisition is a safe and highly accurate technique for cyto/histological diagnosis of PanNENs with a well-demonstrated correlation between Ki-67 proliferation index values and tumor grading on EUS and surgical specimens according to the WHO 2017 classification. Furthermore, the possibility of a preoperative EUS-guided fine needle tattooing or fiducial markers placement may help the surgeon to locate small and deep tumors, thus avoiding formal pancreatic resections in favor of parenchymal-sparing surgery. Finally, locoregional ablative treatments using either ethanol injection or radiofrequency ablation have been proposed in recent studies with promising results in order to control symptoms or reduce tumor burden in selected patients unfit for surgery with functioning or non-functioning PanNENs. This article review highlights the current role of EUS in PanNENs management, focusing on the present and future applications of EUS-guided interventions.
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