异位胃黏膜核素显像对小儿下消化道出血的诊断  

Radionuclide Imaging Diagnosis of Ectopic Gastric Mucosa in Pediatric Patients with Lower Alimentary Tract Hemorrhage

作　　者：郭景财 郑向红[2] 宋厂义[2] 封娟毅[2] 宁宁[2] 郭正团[2] 

机构地区：[1]西安市临潼区妇幼保健院外科,陕西西安710600 [2]西安交通大学第二医院

出　　处：《实用放射学杂志》2007年第1期112-114,共3页Journal of Practical Radiology

摘　　要：目的研究放射性核素异位胃黏膜显像在小儿下消化道出血中的显像特征及临床诊断价值。方法应用99Tcm-高得酸盐(99TcmO4-)对57例患儿分别进行了多时相(动态、30min及60min静态)显像。结果57例患儿中异位胃黏膜显像阳性39例。44例进行了手术治疗,其中Meckel’s憩室29例,影像特征呈小圆形或类圆形异常核素浓聚灶,常位于右下腹或脐周围,位置固定;肠重复畸形8例,影像特征呈肠袢形或大团块状异常核素浓聚影,不规则。假阳性2例(4.55%),假阴性3例(6.82%)。结论放射性核素的特征性影像可为异位胃黏膜所致的下消化道出血患儿提供可靠的病因和定位诊断。Objective To study the radionuclide imaging characteristics and clinical diagnostic value of ectopic gastric mucosa in pediatric patients with lower alimentary tract hemorrhage. Methods ^99Tc^mO4^- - based multi - phase （ dynamic state, 30 minutes and one hours quiet state ） radionuclide imaging was undertaken in 57 pediatric patients with gastrointestinal bleeding. Results 39 cases of 57 patients were positive in radionuclide imaging of ectopic gastric mucosa. Among all patients,44 cases undergone operation, of them 29 cases were Meckel ＇ s diverticulum which was characterized by little circular or similar little circular abnormal accumulations of nuclide at the right lower quadrant or the amphi -navel. 8 cases were intestinal duplication, which was characterized by ansa interstinalis -shape or large bolus of nuclide accumulations. False positive was in 2 cases（4.55% ） and false negative was in 3 cases（6.82% ）. Conclusion The characteristic radioactive nuclide image is able to offer the reliable etiological and niveau diagnosis of lower alimentary tract hemorrhage caused by ectopic gastric mucosa in pediatric patients.

关 键 词：儿童 下消化道出血 Meckel’s憩室 肠重复畸形 核素显像 

分 类 号：R573[医药卫生—消化系统] R817.4[医药卫生—内科学]