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迄今对于完全扁平的或小于1厘米的胃癌病灶,使用常规的内窥镜还不能检出。作者使用“间接的染料喷洒法”可帮助内窥镜发现胃粘膜表面轻微的颗粒状改变。原理是使用靛胭脂加强显示早期胃癌病灶的形态学改变,以助内窥镜的准确观察;同时或分别使用亚甲蓝作胃粘膜的活体染色,亦有助于内窥镜发现早期胃癌。方法和步骤:①检查前20分钟给患者注射解痉剂;②接着给患者口服稀释10倍的二甲基聚硅氧烷溶液80毫升,内混合碳酸氢钠1克,蛋白酶20,000微微单位,让患者转动体位15分钟,以清除胃粘液;③在
To date, a completely flat or less than 1 cm gastric cancer lesion has not been detected using a conventional endoscope. The authors used the “indirect dye spray method” to help the endoscope detect a slight, granular change in the gastric mucosal surface. The principle is to use rouge to enhance the display of morphological changes in early gastric cancer lesions to facilitate accurate observation of the endoscope. Simultaneous or separate use of methylene blue for the biopsy of gastric mucosa can also help the early detection of early gastric cancer. Methods and Procedures: 1 The patient is given an antispasmodic agent 20 minutes before the test; 2 The patient is then given an 80-ml dilution of a 10-fold dimethicone solution orally, 1 g of sodium bicarbonate is mixed, and the protease is 20,000 picounits. The patient was rotated for 15 minutes to remove gastric mucus; 3