case_images: PMC5080517_01
case_images: Images from the retrograde pyelogram performed during the initial ureteroscopy and resection. Note that no contrast is passing above the mass (a) and the filling defect from the mass (b) once the ureteric catheter is passed around it.
case_images: CRIU2016-1853015.001.jpg
case_images: PMC5080517_01_CRIU2016-1853015.001.jpg
case_images: fig1
case_images: The retrograde pyelogram confirmed the presence of the lesion, with evidence of obstruction in the mid ureter above the lesion (Figure 1).
case_images: Retrograde pyelogram conducted at the time of the relook ureterorenoscopy. Note the absence of filling defects and the normal calibre upper tracts.
case_images: CRIU2016-1853015.002.jpg
case_images: PMC5080517_01_CRIU2016-1853015.002.jpg
case_images: fig2
case_images: The retrograde pyelogram did not demonstrate any filling defects or any evidence of the hydroureter (Figure 2).