Surgery A 60 yr old chronic smoker presents with painless gross hematuria of 1 day duration. Investigation of choice to know the cause of hematuria A USG B X-ray KUB C Urine routine D Urine microscopy for malignant cytology cells 💡 Explanation A 60 yr old chronic smoker presents with painless gross hematuria of 1 day duration. Investigation of choice to know the cause of hematuria ✓ Correct Answer: D. Urine microscopy for malignant cytology cells