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目的:探讨美蓝染色对胃良恶性病变的定牲及判定癌浸润深度的价值。方法:将0.3%美蓝用喷洒管经内镜直接在病变处喷洒染色。结果:53例中Ⅰ型6例,Ⅱ a型6例,Ⅱ a+Ⅱc型4例,Ⅱc型6例,Ⅲ型19例,Ⅱc+Ⅲ型12例;粘膜内癌 24例,粘膜下癌 29例。染色后对癌浸润深度判断的准确率为粘膜内癌 82.5%,粘膜下癌 86.2%。结论:美蓝染色可使病变更加清晰,增加立体感,补充肉眼观察的不足,对鉴别病变的良恶性及判定癌浸润深度具有重要的价值。
OBJECTIVE: To investigate the value of methylene blue staining in the determination of benign and malignant gastric lesions and to determine the depth of cancer invasion. METHODS: 0.3% Methylene blue was sprayed directly through the endoscope at the lesion. RESULTS: Among the 53 cases, there were 6 cases of type I, 6 cases of type IIa, 4 cases of type IIa+IIc, 6 cases of type IIc, 19 cases of type III, 12 cases of type IIc+III, 24 cases of intramucosal carcinoma and 29 cases of submucosal carcinoma. The accuracy of judging the depth of invasion after staining was 82.5% in intramucosal cancer and 86.2% in submucosal cancer. Conclusion: Methylene blue staining can make the lesion more clear, increase the three-dimensional sensation, and supplement the insufficiency of macroscopic observation, which is of great value in distinguishing benign and malignant lesions and judging the depth of cancer invasion.