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用扫描电镜对经切片证实的25例慢性浅表性胃炎、12例萎缩性胃炎和5例正常胃粘膜进行观察,着重研究其基本形态特征,并作对比和分析鉴别。结果:正常胃体部胃小凹开口呈圆形或卵圆形,幽门部者有三角形、不规则形或沟形:胃小凹周围隆起如堤防状。表面上皮细胞为多边形,排列呈砌石状(图1)。上皮细胞腔面有许多短棒状微绒毛和少数半球形丘状隆起,散在三五成群细胞腔面膜灶性糜烂。慢性浅表性胃炎时,胃小凹开口不同程度变形,大小不等,(图2),表面上皮细胞有些大小不等,多见成片上皮细胞腔面膜糜烂,细胞表面小丘状隆起及各种突起增多(图3)。萎
Scanning electron microscopy was used to observe 25 cases of chronic superficial gastritis, 12 cases of atrophic gastritis and 5 cases of normal gastric mucosa confirmed by biopsy. The basic morphological characteristics of the specimens were emphatically studied, and comparison and analysis were performed. RESULTS: The opening of the gastric pit in the normal gastric body was round or oval, and the pylorus was triangular, irregular or grooved: the bulge around the gastric pit was like a dike. Surface epithelial cells are polygonal and arranged in masonry (Figure 1). Epithelial cells have many short rod-like microvilli and a few hemispherical bulges on the luminal surface of the epithelial cells, scattered in three or five groups of cell cavities. In chronic superficial gastritis, the gastric pit openings are deformed to varying degrees and vary in size (Fig. 2). Some of the surface epithelial cells are not equal in size, and most of them are epithelial cavities in the epithelial cells. There are more protuberances (Figure 3). wilt