Figure 1c. Calicocutaneous fistula as a complication of partial nephrectomy for renal cell carcinoma. (a) CT urogram shows air in the collecting system (arrow) and contrast material extravasating to the incision site (arrowhead). (b) CT urogram obtained at another level shows the fistula (arrowheads) extending outside the kidney through the soft-tissue layers. (c) Nephrostogram also shows the leaking contrast material (arrowhead). Percutaneous nephrostomy was performed to divert the urine to aid healing of the fistula.