胃癌是常见的恶性肿瘤之一,在我国其发病率仅次于肺癌居恶性肿瘤的第二位,死亡率排在肺癌和肝癌之后,居第三位。与其他的恶性肿瘤一样,胃黏膜上皮细胞的癌变是一个渐进过程,常经历多年的持续癌前病变阶段,其中少数病人会演变为胃癌。那么什么是胃癌的癌前病变呢?癌前病变是指某些具有明显癌变危险的病变,如不及时治疗就可能转变为癌。再来说胃癌癌前病变,它是一个组织学概念,指胃黏膜的某些组织病理学变化,这些病变较正常的胃黏膜或其他胃黏膜病变更易发生癌变,主要包括慢性萎缩性胃炎、胃息肉、胃溃疡和胃大部切除术后残胃等。很多 Gastric cancer is one of the common malignant tumors. Its incidence is second only to malignant tumors of lung cancer in our country. The mortality ranks the third place after lung cancer and liver cancer. As with other malignancies, carcinogenesis of gastric mucosal epithelial cells is a progressive process that often goes through years of persistent pre-cancerous stages, in which a minority of patients develop gastric cancer. So what is precancerous lesions of gastric cancer? Precancerous lesions are some of the lesions with significant risk of cancer, if not treated may be transformed into cancer. In other words, precancerous lesions of gastric cancer, which is a histological concept refers to the histopathological changes of some gastric mucosa, these lesions more prone to cancer than the normal gastric mucosa or other gastric mucosal lesions, including chronic atrophic gastritis, gastric polyps , Gastric ulcer and residual gastrectomy after subtotal gastrectomy. a lot of