This issue of the Medical Clinics of North America is a comprehensive monograph on urology for the internist.  Topics covered include bladder pain syndrome; prostatitis and chronic pelvic pain syndrome; prostatism and lower urinary tract obstruction; neurologic/obstructive voiding dysfunction; neurologic/obstructive voiding dysfunction; irritative voiding symptoms; HIV/AIDS and STDs of the urinary tract; hematuria; renal mass; decreasing renal function; urologic stone disease; PSA in prostate cancer; erectile dysfunction; male factor assessment in infertility; testicular mass; urologic trauma; and urinary frequency and incontinence.  Unique urologic issues for women, men, and children are discussed.