随着术前检查技术的发展，经内窥镜超声引导下的细针穿刺活检（EUS-FNA）已广泛应用于术前病理诊断。然而，在获取适当的组织样本和准确的病理结果以预测疾病风险方面仍存在挑战。因此，本研究旨在分析消化系统恶性肿瘤及其自身免疫性疾病的特征，并分析不同病理程度的pNENs的临床病理特征、术前CT影像学特征和病理分级对pNENs预后的影响。实验结果表明，非功能性胰腺神经内分泌肿瘤在多相CT检查中显示出突出的周围高血管病变。其中，动脉期和门脉期在结束时最清晰地成像，局部血管侵犯程度可以作为评估其可切除性的指标。 CT检查的敏感性为63％至82％，特异性为83％至100％，具体取决于大小。版权所有©2023 Yin and Li。

With the development of preoperative examination technology, endoscopic ultrasonography-guided fine-needle aspiration biopsy (EUS-FNA) has been widely used in preoperative pathological diagnosis. However, challenges remain in obtaining appropriate tissue samples and obtaining accurate pathological results to predict disease risk. Therefore, this study aimed to analyze the characteristics of digestive system malignancies and their autoimmune diseases, and to analyze the clinicopathological features, preoperative CT imaging features and pathological grades of pNENs of different pathological degrees of pNENs on the prognosis of pNENs. Experimental results showed that non-functioning pancreatic neuroendocrine tumors showed prominent surrounding hypervascular lesions on multiphase CT examination. Among them, arterial phase and portal venous phase were most clearly imaged at the end, and the degree of local vascular invasion could be used as an index to evaluate its resectability. The sensitivity of CT examination was 63% to 82%, and the specificity was 83% to 100%, depending on the size.Copyright © 2023 Yin and Li.