彩色多普勒内镜超声在胰岛细胞瘤术前定位诊断中的作用

目的 探讨彩色内镜超声在胰岛细胞瘤术前定位诊断中的作用。方法 对经内科检查定性诊断为胰岛细胞瘤，并准备手术切除的7例患者，术前进行彩色多普勒内镜超声（ECDUS），经腹B超和胰腺螺旋CT增强扫描检查，并与手术和病理检查结果相对照，比较上述3种影像学检查在术前定位诊断中的作用。结果 7例患者手术和病理检查共发现10个病灶，ECDUS检出8个，胰腺螺旋CT增强扫描检出1个，经腹B超未有检出，病灶部位与手术见一致。ECDUS漏诊的2个病灶，直径均小于或等于0.5cm。检查中无并发症发生。结论 ECDUS对胰岛细胞瘤的术前定位诊断比B超，CT等无创性检查技术，敏感性高，定位准确，但对于直径小于或等于0.5cm的病灶，定位诊断仍有困难。

Role of endoscopic color Doppler ultrasonography in the preoperative localization of insulinomas

Objective To investigate the role of endoscopic color Doppler ultrasonography (ECDUS) in the preoperative localization of insulinomas. Methods Seven patientsd woman) with biochemically diagnosed insulinoma underwent abdominal US, spiral CT and ECDUS in an attempt to precisely localize the tumor before surgery. Surgical and pathological results were considered as the definite localization of tumor. The role of ECDUS in the preoperative localization of insulinomas was compared with that of abdominal US and spiral CT. Results Ten tumors were detected by surgery and pathology. The sensitivity of ECDUS in identifying insulinomas was 8/10 compared with 1/10 for CT and 0/10 for abdominal US. Two tumors not detected by ECDUS had a size below 0. 5cm. Conclusions ECDUS is superior to spiral CT or abdominal US, and should be served as the first choice in the detection of pancreatic isulinomas. ECDUS identification depends on the size of the tumor and 'is hard to detect the tumors smaller than 0. 5cm.