Endoscopic ultrasound in the diagnosis of pancreatic neuroendocrine  tumors SHU Hui-jun, YANG Ai-ming.Department of Gastroenterology，Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730，China
Corresponding author: YANG Ai-ming,E-mail:yangaiming@medmail.com.cn
Abstract    Pancreatic neuroendocrine tumors (PNETs) are rare tumors with malignant potential. Endoscopic ultrasound (EUS) has been shown to be of great importance in the preoperative localization and diagnosis of PNETs and may likely be superior to other imaging techniques in the assessment of small tumors. The usefulness of EUS as a primary exploration after US or CT has been posited for tumor diagnosis and localization before surgery.