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在英格兰和威尔士膀胱癌的死亡登记都有明显上升:1960年男为2131,女为917;1970年为2689和1139;1971年为2763和1107。每百万人口中的膀胱癌组死亡率1960年男为96,女为39,合计为67;1970年男为113,女为45,合计78。膀胱癌在恶性肿瘤致死的次序中男为第7位,女为第11位。男女发病比例为2.4:1。这种上升很难找到合适的解释理由,而且显然城市较农村为高,可能城市居民有较多的机会接触致癌源,还有职业性的危害。吸烟也可能是一个原因,已检
In England and Wales there was a marked increase in deaths from bladder cancer: 2131 males and 917 females in 1960; 2689 and 1139 in 1970; and 2763 and 1107 in 1971. The death rate of bladder cancer patients per million population was 96 males and 39 females in 1960, a total of 67; in 1970, males were 113 and females was 45, a total of 78. Bladder cancer ranks 7th for men and 11th for women in the order of lethality for malignancy. Male and female incidence ratio of 2.4: 1. This rise is difficult to find a reason to explain, and apparently higher than the rural urban areas, urban residents may have more opportunities to come into contact with carcinogenic sources, as well as occupational hazards. Smoking may also be a reason, seized