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病例选择:经门诊检查有上腹疼痛或不适、上腹胀、嗳气、反酸、烧心等上消化道症状持续1个月以上的长期居住于北京地区的患者,经胃镇检查发现有慢性胃炎而无其它明显上消化道器质性疾病,经有关检查排除其它腹腔脏器疾病。所有患者都经过有经验的胃镜医师做胃镜检查,至少在胃窦小弯和胃体小弯各取活检一块,如有糜烂或其它病变则在该处加取,组织学检查采用HE和WS染色,光镜观察。随机收集
Case selection: Patients who have been living in Beijing for an extended period of more than one month with upper gastrointestinal symptoms such as epigastric pain or discomfort, upper abdominal distension, belching, acid reflux, and heartburn, were found to have chronic gastritis after gastric examination. There was no other significant organic disease of the upper digestive tract, and other organs of the abdomen were ruled out by examination. All patients underwent gastroscopy by an experienced gastroscope surgeon. At least a small biopsy was performed on the small antrum and the small curve of the stomach. If there were any erosions or other lesions, they should be taken there. Histological examination was performed using HE and WS staining. Light microscope observation. Random collection