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目的探讨膀胱颈口狭窄与膀胱肿瘤的发病关系。方法检测、对比分析了８０例膀胱肿瘤患者和２０例非肿瘤患者的膀胱颈口及尿流率。结果８０例膀胱肿瘤患者的膀胱颈口８５％存在狭窄，而对照组仅为１０％（Ｐ＜０．０１）；膀胱肿瘤组的平均最大尿流率及尿道阻力参数与正常值均有明显差异。结论认为膀胱颈口狭窄、排尿梗阻、尿流异常是膀胱肿瘤发病原因之一。
Objective To investigate the relationship between bladder neck stenosis and the incidence of bladder cancer. Methods The bladder neck and urinary flow rate in 80 bladder cancer patients and 20 non-tumor patients were compared and analyzed. Results Eighty patients with bladder cancer had 85% of bladder neck stenosis compared with 10% in control group (P <0.01). The mean maximum urinary flow rate and urethral resistance parameters in bladder cancer group were significantly different from those in normal group . Conclusions that the bladder neck stenosis, urinary obstruction, abnormal urinary flow is one of the causes of bladder cancer.