EXTENSIVE DILATION OF DISTAL URETER FOR ENDOSCOPIC TREATMENT OF LARGE-VOLUME URETERAL DISEASE

Two patients with large volume disease in markedly dilated ureters wer e treated endoscopically by wide dilation of the ureteral orifice and passage of larger nonureteroscopic endoscopes. The larger instruments provided better vision and the ability to work with larger tools, whic h greatly facilitated treatment without complication in patients who o therwise would have undergone an open procedure.