High wbc in urine, no infection on urine culture, smoker, family cancer history, referred to urinology, what are the different things this could mean?

Pyuria: You have a sterile pyuria. Did you take any recent abx? A local bladder pathology is possible but less likely. Kidney stone, or a process within in the kidney of inflammation or a primary glomerular process can do this. Agree with urology but you need to see a kidney doc. Best of luck. This search can cause long and cause anxiety. Hang in there