临床隐匿性胃癌的FDG PET/CT征象  

FDG PET/CT diagnosis of clinically occult gastric cancer

作　　者：王欣[1] 于丽娟[1] 陆佩欧[1] 田墨涵[1] 李迎辞[1] 王洪 

机构地区：[1]哈尔滨医科大学附属第三医院PET/CT中心,黑龙江省哈尔滨市150081 [2]哈尔滨市呼兰区妇幼保健站,黑龙江省哈尔滨市150500

出　　处：《世界华人消化杂志》2012年第36期3695-3700,共6页World Chinese Journal of Digestology

基　　金：哈尔滨医科大学附属第三医院科研启动基金资助项目;No.JJ2009-13~~

摘　　要：目的:总结临床隐匿性胃癌的氟脱氧葡萄糖(fluorodeoxyglucose,FDG)PET/CT影像表现特点.方法:回顾分析26例临床隐匿性胃癌的临床及PET/CT影像资料.男18例,女8例,年龄41-83岁,平均年龄60.8岁,皆以转移瘤症状为首发症状,经胃镜活检证实24例,经开腹手术证实2例.以目测法分别分析FDG PET和CT影像,依据其异常表现的强度分为强阳性、弱阳性和阴性;再综合PET和CT表现,根据诊断的难易程度分为3型:易诊型、疑诊型和难诊型.结果:PET表现为强阳性者57.7%(15/26),弱阳性者23.1%(6/26),阴性者19.2%(5/26).同机CT表现强阳性者76.9%(20/26),弱阳性者11.5%(3/26),阴性者11.5%(3/26).易诊型为53.8%(14/26),疑诊型为34.6%(9/26),难诊型为11.5%(3/26).结论:临床隐匿性胃癌大约88.4%的患者可通过FDG PET/CT检查发现或提示胃癌.AIM：To investigate the use of fluorodeoxyglucose（FDG） positron emission tomography（PET）/CT imaging in diagnosis of clinically occult gastric cancer.METHODS：The imaging data for 26 patients with clinically occult gastric cancer who underwent FDG PET/CT imaging were reviewed retrospectively.They were hospitalized for metastatic tumors and therefore underwent FDG PET/CT for detecting carcinoma of unknown primary origin.They were finally diagnosed with gastric cancer by endoscopy（n=24） or laparoscopy（n=2）.Based on imaging manifestations,the patients were divided into three groups：easily diagnosed,suspected,and hardly diagnosed.RESULTS：PET imaging showed 57.7%（15/26） of intensively positive cases,23.1%（6/26） of positive cases,and 19.2%（5/26） of negative cases.CT imaging showed 76.9%（20/26） of intensively positive cases,11.5%（3/26） of positive cases,and 11.5%（3/26） of negative cases.The percentages of easily diagnosed,suspected,and hardly diagnosed patients were 53.8%（14/26）,34.6%（9/26） and 11.5%（3/26）,respectively.CONCLUSION：FDG PET/CT imaging can help diagnose clinically occult gastric cancer in about 88.4% of patients.

关 键 词：胃癌 氟脱氧葡萄糖 正电子发射断层显像 计算机断层显像 

分 类 号：R735.2[医药卫生—肿瘤]