This is performed for the diagnosis and or treatment of ureteral disease including stones, strictures (scarring) or tumors. Under general anesthesia, the patient is placed in lithotomy position (legs in stirrups) . The bladder is entered through the urethra with a very thin scope that is placed into the ureter for direct visualization of the ureter. It may be accompanied by a laser removal of the stone if a stone is found or biopsy of a mass if that is found. It is usually followed by placement of a ureteral stent (see below). The procedure is can take anywhere from 30-90 minutes, depending upon the indication for which it is performed. It is an outpatient procedure and you will be discharged to home after the procedure. After effects may include some blood in the urine, increased urgency and frequency of urination.