超声内镜对常规内镜活检阴性胃壁增厚病变的诊断价值

EUS on diagnosis of gastric lesions with thickened gastric wall and negative pathological findings

目的评价超声内镜对常规内镜活检阴性胃壁增厚病变的诊断价值。方法回顾性分析57例常规内镜活检阴性胃壁增厚病变行超声内镜检查患者的诊断结果和随访情况，以手术病理和随访结果为最终诊断，统计内镜超声检查术（EUS）的诊断符合率以及内镜超声引导下细针穿刺抽吸术（EUS—FNA）、内镜超声定位下活检的阳性发现率。结果57例最终诊断为胃癌19例、胃淋巴瘤10例、不典型增生1例、Menetrier’s病1例、炎性改变26例。EUS对胃癌的诊断符合率为53．8％（14／26），对胃淋巴瘤的诊断符合率为50．0％（10／20）；EUS．FNA阳性发现率为47．4％（9／19）；内镜超声定位下活检阳性发现率为66．7％（20／30）。结论EUS结合EUS—FNA尚不能作为鉴别诊断常规内镜活检阴性胃壁增厚病变病因的金标准，但超声内镜对诊断有一定帮助。

Objective To evaluate the accuracy of EUS, EUS-guided fine needle aspiration （EUSFNA） and targeted biopsy in the diagnosis of wall-thickened gastric lesions with negative malignant results of endoscopic biopsies. Methods A retrospective study was carried out in 57 patients who were found with thickened gastric wall of negative malignant endoscopic biopsies and underwent EUS from January 2008 to December 2010 in our hospital. Compared the EUS findings with the surgical results and follow-up status. The diagnostic yield of EUS was characterized by the disappearance of the layers or the changes of thickness of gastric wall, the characteristics of echo imaging, and the results of EUS-FNA or EUS targeted biopsy were recorded to evaluate the value of EUS. Results Of 57 cases, gastric cancer was confirmed in 19, lymphoma in 10, dysplasia in 1, Menetrier＇s disease in 1 and inflammatory changes in 26. EUS could clearly demonstrate the changes of gastric wall including the thickness and the changes of layers, with the accuracy rate of 73.07% （14/19） on gastric cancer. EUS diagnosed gastric cancer in 26 cases, in which 14 （53.8%） were confirmed by pathology. Gastric lymphoma was suspected by EUS in 20 cases, in which 10 （50.0%） were proved. EUS-FNA was conducted in 19 cases, with positive result in 9 （ accuracy rate 50% ）. EUS-guided targeted deep biopsy or piece-meal biopsy were performed in 10 cases, with 8 malignant results. Conclusion EUS with/without EUS-FNA is not a golden standard for the diagnosis of gastric lesions in thickened gastric wall, yet it still has some significance.