膀胱癌是泌尿系统最常见的恶性肿瘤,发病率居泌尿系统恶性肿瘤的首位,在全身恶性肿瘤发病率中占4%,且近年有增加之势。膀胱癌多发于50岁以上的中老年人,随着年龄的增大发病率也相应增长。膀胱癌的致病因素有哪些问及哪些人更容易患膀胱癌,宣武医院泌尿外科主任欧彤文教授给出了答案。吸烟是首要致病因素,有研究表示吸烟者患病几率是非吸烟者的四倍。烟草中的化学物质从肺部进入血液中,然 Bladder cancer is the most common malignant tumor of the urinary system, the incidence of urinary tract malignancy ranks first in the incidence of systemic malignancies accounted for 4%, and in recent years there is an increase trend. Bladder cancer more than 50 years of age in the elderly, with increasing age, the incidence also increased accordingly. What are the risk factors of bladder cancer ask which people are more susceptible to bladder cancer, Xuanwu Hospital Urology Director Professor Ou Tongwen gives the answer. Smoking is the leading risk factor, and studies show that smokers are four times more likely to be ill than non-smokers. Chemical substances in tobacco enter the bloodstream from the lungs, however