Excretory phase imaging due to prior contrast injection.
Small urine leak around the left kidney which appears to be emanating from the upper pole via a thin channel which is best differentiated on the portal venous phase, as it is obscured by increasing contrast accumulation on the delayed phase. No excretion into the ureter, likely due to clot obstructing the pelviureteral junction, which results in mild hydronephrosis.
Esophogram was performed due to mild pneumomediastinum on the chest images (not shown), accounting for the contrast in the colon.