Tomizawa Minoru, Shinozaki Fuminobu, Motoyoshi Yasufumi, Sugiyama Takao, Yamamoto Shigenori, Ishige Naoki
Department of Gastroenterology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Japan.
Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Japan.
Case Rep Gastroenterol. 2016 May 9;10(1):168-73. doi: 10.1159/000443269. eCollection 2016 Jan-Apr.
Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) is performed to obtain specimens for pathological analysis. For this procedure, 19-gauge (19G), 22-guage (22G), and 25-guage (25G) needles are available. The needles are classified into aspiration type and biopsy type. A 56-year-old woman underwent upper gastrointestinal endoscopy that showed a 38-mm-diameter submucosal tumor. The elevated lesion was diagnosed as a submucosal tumor of the stomach. Contrast-enhanced computed tomography showed a low-density area on the luminal surface of the gastric wall, which was covered with a thin layer of gastric mucosa. EUS showed a hypoechoic lesion in the submucosal layer. Color Doppler image showed a pulsating vascular signal extending into the center of the hypoechoic lesion from the periphery. EUS-FNA was performed with a 25G biopsy needle. The specimen tissue consisted of spindle-shaped cells. The cells were positive for CD117 and CD34. The submucosal tumor was diagnosed as a gastrointestinal stromal tumor.
内镜超声引导下细针穿刺活检（EUS-FNA）用于获取标本进行病理分析。对于此操作，有19号（19G）、22号（22G）和25号（25G）的针可供使用。这些针分为抽吸型和活检型。一名56岁女性接受了上消化道内镜检查，发现一个直径38毫米的黏膜下肿瘤。该隆起病变被诊断为胃黏膜下肿瘤。增强计算机断层扫描显示胃壁腔面有一个低密度区域，其表面覆盖着一层薄的胃黏膜。超声内镜显示黏膜下层有一个低回声病变。彩色多普勒图像显示一个搏动性血管信号从周边延伸至低回声病变中心。使用25G活检针进行了EUS-FNA。标本组织由梭形细胞组成。这些细胞CD117和CD34呈阳性。该黏膜下肿瘤被诊断为胃肠道间质瘤。
