目的分析26例胰腺实性假乳头 状瘤患者的CT特征及CT在该病临床诊断 中的应用价值。方法 收集我院2010年1 月-2015年10月经免疫组织化学及病理证 实的胰腺实性假乳头状瘤患者26例作为研 究对象，采用Siemens Sensation 64层螺 旋CT机进行检查，总结患者多层螺旋CT影 像学资料特征。结果 26例患者中，9例病 变部位在胰头、17例在胰体尾部。肿瘤密 度不均匀，由囊性与实性成分混合组成， 囊性成分平扫呈液体低密度影，实性成分 平扫则呈低或等密度。增强扫描囊性成分 无强化，实性成分动脉期轻度强化，静脉 期与延迟期中度不均匀强化，且呈渐进性 向心性强化，肿瘤包膜多为完整。结论 胰腺实性假乳头状瘤患者CT特征包括密度 不均匀，增强扫描囊性成分无强化，实性 成分动脉期轻度强化、静脉期与延迟期中 度不均匀强化，且呈渐进性向心性强化， 多有完整包膜，较为明确，利于患者的确 诊，具有较大诊断价值。

Objective To analyze the CT characteristics of 26 patients with solid pseudo papillary tumors of pancreas and the application value of CT in the clinical diagnosis of the disease. Methods 26 patients with solid pseudo papillary tumors of pancreas confirmed by immunohistochemistry and pathology from January 2010 to October 2015 were treated as the research objects. Siemens Sensation 64 slice spiral CT machine was used for examination. The characteristics of multi-slice spiral CT imaging data of the patients were summarized. Results Among the 26 patients, the diseased regions of 9 patients were in the head of pancreas and 17 were in the tail of pancreas. The density of tumors was inhomogeneous and it was composed of cystic and solid components. The cystic component showed liquid low density shadow in plain scan, while the solid component showed low or equal density. Enhanced scan showed that cystic components were without enhancement, while solid components were with slight enhancement in the arterial phase and moderate inhomogeneous enhancement in venous phase and delayed phase, showing progressively centripetal enhancement. Most were with complete tumor capsule. Conclusion CT characteristics of patients with solid pseudo papillary tumors of pancreas include inhomogeneous density, no enhancement in cystic components after enhanced scan. There is mild enhancement in solid components in the arterial phase and moderate inhomogeneous enhancement in venous and delayed phase. It shouwed progressively centripetal enhancement, with complete capsule. It is relatively clearer, which is good for definite diagnosis of patients, with greater diagnostic value.