50 yo commercial pilot. found bladder cancer on a routine flt PE and he's cured ... lost his urinary bladder but is back to flying. took 18 mo and a SI. Though blood in urine is not required to be tested for in a FAA routine exam ... most AME's use a test (dipstick) that checks 4 a lot of other things. If i find blood i send airman to their MD or a Urologist.