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萎缩性胃炎
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萎缩性胃炎(atrophic gastritis)是一种胃黏膜的慢性炎症,导致胃腺细胞(英语:Gastric glands)丧失,并最终由小肠和纤维组织取代;因此胃的胃酸、胃蛋白酶和内因子分泌功能受损,导致消化及营养功能出现问题,如:维生素B12缺乏症、恶性贫血,以及铁吸收不良造成的缺铁性贫血[1]。萎缩性胃炎的组织学表现为:胃黏膜固有层腺体数目减少、消失或腺管长度缩短、黏膜厚度变薄、黏膜肌层增厚;常伴有肠上皮化生、炎性反应和不典型增生。
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Quick Facts 萎缩性胃炎, 类型 ...
萎缩性胃炎 | |
---|---|
类型 | 胃炎、chronic gastritis[*] |
分类和外部资源 | |
医学专科 | 胃肠学 |
ICD-10 | K29.4 |
ICD-9-CM | 535.1 |
DiseasesDB | 29503 |
eMedicine | med/851 |
MeSH | D005757 |
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萎缩性胃炎可由幽门螺杆菌持续感染而引起,也可源自于患者自体免疫。由自体免疫导致的慢性萎缩性胃炎又称A型胃炎(type A gastritis),统计上更有可能形成胃癌、桥本氏甲状腺炎,以及胃酸缺乏(英语:Achlorhydria)。A型胃炎主要侵扰胃底或胃体,且常并发恶性贫血。B型胃炎(type B gastritis)主要侵扰胃窦,较常见于幽门螺杆菌感染[2]。