Intra-operative cystoscopy in gynaecological surgery: a brief overview.

Recent studies using universal cystoscopy have demonstrated a higher rate of urinary tract injury at major gynaecological procedures than previously thought. These injuries are associated with significant medical and medico-legal implications. The sensitivity of visual inspection is low and cystoscopic screening with intravenous dye improves detection. We review the evidence for intra-operative cystoscopy in gynaecology, with emphasis on rates of urinary tract injury and the use of intravenous contrast dye.