Surgery A 60 yr old smoker came with the history of painless gross hematuria for one day. The investigation of choice would be : A Urine routine and microscopy B Plain x-ray KUB C USB KUB D Urine for malignant cytology 💡 Explanation A 60 yr old smoker came with the history of painless gross hematuria for one day. The investigation of choice would be : ✓ Correct Answer: D. Urine for malignant cytology