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目的 探讨阑尾血吸虫卵在阑尾炎发病过程中的作用及机理。方法 将225例阑尾炎病例按术后病检有无阑尾血吸虫分成二组进行比较分析。结果 (1)二组在发病第1天及发病3d以后，临床表现、阑尾穿孔及术后并发症发生率无显著性差异(P＞0.05)。(2)二组在发病的第2～3天，病理分型，术后并发症发生率有显著性差异(P＜0.05)，穿孔率有高度显著性差异(P＜0.01)。(3)两组病例，发病第1天嗜酸性粒细胞升高有显著性差异(P＜0.05)，发病第2～3天有高度显著性差异(P＜0.01)，发病3d后无显著性差异(P＞0.05)。结论 在阑尾炎的发病过程中，阑尾血吸虫卵引起迟发型变态反应，导致在发病的第2～3天，阑尾发生化脓、坏疽的可能明显增加。“,”Objectives To study the effect and mechanism of theschistosomiasis on the occurrence of acute appendicitis.Methods 225 cases with appendicitis were divided into two groups according to whether or not the patient had appendix schistosomiasis by postoperative pathological examination.Results (1)clinical findings，perforation and postoperative complication incidence of the two groups were not significantly different (P＞0.05) on the first day and after 3 days of the occurrence of appendicitis.(2)During 2～3 days of the occurrence of appendicitis, pathological features and postoperative complication such as perforation were significantly different between the two groups(P＜0.05).(3)The number of the acidophilic granulocytes was significantly different between two groups on the first day, but there was no significant difference after 3 days.Conclusion In the occurrence of appendicitis schistosomiasis could increase the possibility of appendix suppuration and gangrene which may result from the delayed allergic reaction during 2～3 days of the occurrence of appendicitis.