Chronic ureteropelvic junction obstruction
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Severely dilated left renal pelvis and calyces with cortical thinning. Abrupt transition at the proximal ureteropelvic junction. Proximal ureteral enhancement.
This is a spectrum of the chronically obstructed kidneys (in this case due to a benign stricture), but in this setting there is no infection. It was managed with percutaneous nephrostomy and stent placement, with negative cultures, cytology and brushing were performed and supported a benign process.