vas deferens gerota's fascia BPH catheter urolithiasis ESWL cystectomy suprapubic TURP VCUG DRE urgency incontinence dysuria dribbling nephrostomy prostate epididymis ureter kidney urologist gleason laser hematuria hydrocele hypospadias cystitis cystoscopy urethroscopy urology nephrectomy micturition orchiectomy torsion priapism seminoma funwise transplant