KUB, CT scan, Retrograde Pyelogram, Antegrade Nephrostogram and Rotational Fluoroscopic Tomography. The patient is a teenage male who had sustained penetrating trauma to his perineum. A tree branch penetrated through his perineum, into the right lower quadrant of the abdomen, avulsing his right ureter from the bladder at the UVJ. (a) KUB obtained after IV contrast administered for CT scan. Image demonstrates extravasation of contrast from the distal right ureter