I would certainly suggest that he gets some basic investigations. The urine, preferably early in the morning, should be analyzed by a cytologist for the kind of cells that are being voided. An ultrasound
study of abdomen and an estimate of post void urine will be definitely useful. Also suggest that a urine culture be done. We would also like to know if he is on blood thinner medicines or has there been a recent onset of bleeding tendency.
Please let me know if you require further clarifications.