Gastric cancer is one of the most common cancer and one of the most frequent causes of cancer-related deaths,the cancerization of gastric mucosa epithelial cell is a gradual process.

• 胃癌是最常见的恶性肿瘤之一,胃黏膜上皮细胞癌变是一个渐进的过程,其主要癌前病变为胃黏膜上皮异型增生和肠上皮化生。