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对33例经胃镜检查初步诊断为胃癌的患者进行18FDG-PET(18F脱氧葡萄糖-正电子断层扫描)检查,并经手术和病理证实,胃癌术后随访病例19例,以评价18FDG-PET对胃癌的诊断价值。18FDG-PET对于肿瘤原发病灶诊断准确率97%(32/33),1例假阴性,远处转移准确率100%(6/6)。对于单纯胃局部(主要为第1站)淋巴结转移灵敏度55%(6/11),特异性为100%。改变22%(7/32)的患者治疗方案。19例随访病例中7例PET显示阴性,其中5例随访时间超过2年而未见复发。12例发现局部和/或多发转移,其中锁骨上淋巴结转移4例,肺转移2例,肝转移3例,腹腔淋巴结转移6例,吻合口局部复发3例,骨转移6例。18FDG-PET对胃癌的诊断、分期和疗效监测有很高的价值。
Twenty-three patients initially diagnosed as gastric cancer by gastroscopy were examined by 18FDG-PET (18F deoxyglucose-positron emission tomography) and confirmed by operation and pathology. Nineteen patients were followed up to evaluate the effect of 18FDG-PET on gastric cancer The diagnostic value. The diagnostic accuracy of 18FDG-PET for primary tumor was 97% (32/33), 1 case was false negative, and the accuracy of distant metastasis was 100% (6/6). For simple gastric local (mainly the first station) lymph node metastasis sensitivity of 55% (6/11), the specificity was 100%. Change 22% (7/32) of the patient treatment options. Of the 19 follow-up cases, 7 showed negative PET, of which 5 were followed up for more than 2 years without recurrence. There were 4 cases of supraclavicular lymph node metastasis, 2 cases of pulmonary metastasis, 3 cases of liver metastasis, 6 cases of abdominal lymph node metastasis, 3 cases of local anastomosis recurrence and 6 cases of bone metastasis. 18FDG-PET for gastric cancer diagnosis, staging and efficacy monitoring has a high value.