Ueno N, Tomiyama T, Tano S, Wada S, Aizawa T, Kimura K
Department of Gastroenterology, Jichi Medical School, Yakushiji, Tochigi, Japan.
Am J Gastroenterol. 1996 Apr;91(4):772-6.
To evaluate the efficacy of endoscopic ultrasonography with color Doppler function for the diagnosis of islet cell tumor.
Endoscopic ultrasonography was compared with other modalities such as ultrasonography, computed tomography, and angiography in the evaluation of seven patients with islet cell tumor and 28 patients with duct cell cancer.
In cases of islet cell tumor, the tumor detection rates by ultrasonography and endoscopic ultrasonography were 86% and 100%, respectively. Color signals were detected in 14% and 100% of the cases of islet cell tumor by ultrasonography and endoscopic ultrasonography, respectively. The pattern of color signals obtained was rich and abundant, showing pulsatile and/or continuous wave patterns. Angiography and computed tomography showed hypervascularity. However, in cases of duct cell cancer, the tumor detection rates by ultrasonography and endoscopic ultrasonography were 96% and 100%, respectively, whereas color signals were detected in 78% with both ultrasonography and endoscopic ultrasonography. The image of blood flow, which was connected to surrounding vessels, showed a linear pattern and few blood flow signals. In these cases, angiography and computed tomography demonstrated encasement of the artery or portal vein without hypervascularity.
Endoscopic ultrasonography was usefull for the localization and differential diagnosis of islet cell tumor because of its excellent ability to visualize small lesions and tumor vascularity simultaneously.
评估具有彩色多普勒功能的内镜超声检查对胰岛细胞瘤的诊断效能。
在内镜超声检查与超声、计算机断层扫描及血管造影等其他检查方法对7例胰岛细胞瘤患者和28例导管细胞癌患者的评估中进行比较。
在胰岛细胞瘤病例中，超声检查和内镜超声检查的肿瘤检出率分别为86%和100%。超声检查和内镜超声检查分别在14%和100%的胰岛细胞瘤病例中检测到彩色信号。获得的彩色信号模式丰富，呈现搏动性和/或连续性波形。血管造影和计算机断层扫描显示血管丰富。然而，在导管细胞癌病例中，超声检查和内镜超声检查的肿瘤检出率分别为96%和100%，而超声检查和内镜超声检查均在78%的病例中检测到彩色信号。与周围血管相连的血流图像呈线性模式，血流信号较少。在这些病例中，血管造影和计算机断层扫描显示动脉或门静脉受包绕，无血管丰富表现。
内镜超声检查因其能够同时很好地显示小病变和肿瘤血管，对胰岛细胞瘤的定位和鉴别诊断有用。
