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Ureteral retrograde brush biopsy cytology: diagnostic procedure in which renal (kidney) or ureter tissue is removed for examination. Also called retrograde ureteral brush biopsy cytology. The cystoscope enters through the urethra, then the bladder, in order for the guidewire to gain access to the ureter.


How the test is performed: Regional (spinal), or general anesthesia may be used. You are positioned and a cystoscope (a fiberoptic scope) is placed through your urethra into the bladder. A guide wire is inserted through the cystoscope and into your ureter. The cystoscope is then removed, leaving the guidewire in place. A ureteroscope (small telescope to visualize the inside of the ureter and kidney) is passed over or beside the guide wire. Once the suspect area is identified, a nylon or steel brush or biopsy forceps is placed through the ureteroscope and the lesion is rubbed with the brush or biopsied with the biopsy forceps. When the brush or biopsy forceps is removed, the tissue from the lesion is removed from the instrument.


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