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目的:评估经腹部超声(TAUS)、内镜超声(EUS)、CT、MR、选择性血管造影(SAG)及动脉钙刺激静脉采血测定胰岛素(ASVS)在胰腺内分泌肿瘤(PET)术前定位中的价值。方法:对65例经手术及病理证实的PET的术前影像学检查资料进行回顾性分析,比较不同检查方法对PET的定位结果,并探讨PET的影像学表现和特点。结果:各种检查方法术前定位的敏感性和准确性分别为:TAUS为47.4%和41.5%,EUS为90.0%和75.0%,CT为86.9%和82.8%,MR为85.7%和77.4%,SAG为16.7%和16.7%及ASVS为83.3%和83.3%。结论:PET的术前影像学检查方法的选择应从易到难,先行非侵入性的TAUS、MSCT或MR检查;如仍为阴性,则考虑EUS或ASVS;最后为手术探查及术中超声检查。
OBJECTIVE: To evaluate the effect of insulin (ASVS) on pancreatic endocrine neoplasm (PET) preoperative localization by TAUS, EUS, CT, MR, selective angiography (SAG) the value of. Methods: The data of 65 cases of PET confirmed by operation and pathology were retrospectively analyzed. The PET findings of different examinations were compared. The imaging features and features of PET were also discussed. Results: The sensitivity and accuracy of various examinations were 47.4% and 41.5% for TAUS, 90.0% and 75.0% for EUS, 86.9% and 82.8% for CT, 85.7% and 77.4% for MR, SAG was 16.7% and 16.7% and ASVS was 83.3% and 83.3%. Conclusions: The preoperative imaging examination of PET should be performed from easy to difficult, noninvasive TAUS, MSCT or MR. If still negative, EUS or ASVS should be considered. Finally, surgical exploration and intraoperative ultrasound should be performed.