Mehlman High Yield Risk Factors Practice Test

Smoking exposure raises the risk of bladder cancer, and painless blood in the urine is a classic presenting sign of urothelial (transitional cell) carcinoma of the bladder. The carcinogens in tobacco are filtered into the urine and contact the bladder lining, promoting mutations that lead to cancer. Among urologic cancers, this combination—hematuria with a smoking history—most strongly points to bladder cancer. Prostate cancer can cause urinary symptoms or elevated PSA but does not fit as neatly with painless hematuria in this context. Kidney stones can cause hematuria too, but they usually present with colicky flank pain rather than a cancer-type presentation. Renal cell carcinoma can cause hematuria, but its strongest association isn’t as tied to smoking as bladder cancer and it often comes with flank pain or a palpable mass. So, bladder cancer (transitional cell carcinoma) is the most likely diagnosis here.