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Pancreatic neuroendocrine tumors (pNET) and solid pseudopapillary tumors (SPT) are two of the most common pancreatic neoplasms. However, the broad heterogeneity of pNET and SPT in clinical manifestations and radiological features often confuse the presurgical discrimination in clinical practice From March 2006 to January 2021, all patients with pathologically confirmed non-functional pNEN or SPT in our hospital were retrospectively reviewed. 354 cases of pNET and 277 cases of SPT were enrolled in our cohort. Clinical presentation, including age, sex, clinical symptoms, tumor location and size, were collected from electronic medical records and pathologic results. Multimodality imaging including contrast-enhanced CT, MRI, EUS and nuclear medicine image, were performed as previous described and recollected through electronic medical systems (Cheng et al., 2019; Li et al., 2019; Hong et al., 2020; Zhang et al., 2020).胰腺神经内分泌肿瘤（pancreatic neuroendocrine tumors, pNET）与实性假乳头状瘤（solid pseudopapillary tumors, SPT）是临床最为常见的两类胰腺肿瘤。然而，pNET与SPT在临床表现及影像学特征上存在广泛异质性，常使临床实践中的术前鉴别诊断面临较大困难。本研究回顾性分析了2006年3月至2021年1月期间，本院收治的经病理证实的无功能性胰腺神经内分泌肿瘤（non-functional pNEN）或SPT患者。最终本研究队列纳入354例pNET患者与277例SPT患者。研究人员从电子病历与病理结果中收集了患者的临床资料，包括年龄、性别、临床症状、肿瘤部位及肿瘤大小。本研究涉及的多模态影像学检查包括增强计算机断层扫描（contrast-enhanced CT）、磁共振成像（magnetic resonance imaging, MRI）、内镜超声（Endoscopic Ultrasound, EUS）与核医学影像，其实施流程参照既往研究方案，并通过电子医疗系统回溯收集相关影像资料（Cheng等，2019；Li等，2019；Hong等，2020；Zhang等，2020）。