Urinary tract infections (UTIs) are rare in adult males younger than 50 years but increase in incidence thereafter. Causes of adult male UTIs include prostatitis, epididymitis, orchitis, pyelonephritis, cystitis, urethritis, and urinary catheters.bstruction from any cause is a major risk factor for the development of UTI, as are instrumentation of the urinary tract, catheterization, and urologic surgery. In males older than 50 years, prostatic hypertrophy with partial obstruction is the main contributor to the increase in UTI.