The US Food and Drug Administration, which  evaluate the risk of patient infections and contamination issues associated with reprocessed urological endoscopes, has on Monday warned healthcare providers that the current reprocessing instructions for certain urological endoscopes manufactured by Karl Storz are inadequate and are being changed and updated by Karl Storz. The affected urological endoscopes include cystoscopes, ureteroscopes, cystourethroscopes and ureterorenoscopes, used for viewing and accessing the urinary tract.