Clinical relevance of performing endoscopic ultrasound‐guided fine‐needle biopsy for pancreatic neuroendocrine tumors less than 2 cm

Background We sought to define the diagnostic yield and concordance rates between endoscopic ultrasound (EUS)‐fine‐needle aspiration (FNA) and surgical pathology specimen following resection of pancreatic neuroendocrine tumors (pNET) less than 2 cm. Methods Patients with a pNET less than 2 cm who underwent EUS‐FNA were identified using a multi‐institutional international database. Tumor differentiation, and Ki‐67 index, as determined through...