Rates of transitional cell carcinoma of the bladder urothelium are highest in Western Europe and other countries where the prevalence of smoking is high, particularly among men.

Question

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Smoking is a major risk factor for transitional cell carcinoma of the bladder, and regions with higher smoking rates, such as Western Europe, tend to have higher incidences of this cancer type.

Rates of Transitional Cell Carcinoma of the Bladder Urothelium Are