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What is A 65 year old male smoker presents with gross total painless hematuria. The most likely diagnosis is ? and explain in detail?
Ans. is 'a' i.e., Carcinoma of urinary bladder "Painless haematuria is by far the most common symptom and should be regarded as indicative of bladder carcinoma unless proven otherwise." Bailey Cigarette smoking is the main etiological factor for bladder cancer.