PMC4976604_01
Coronal non-enhanced CT scan image of the abdomen and pelvis showing a right nephrostomy catheter traversing the right kidney with the catheter loop seen within the IVC (arrow).
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IVC. It also showed a sheared wire fragment curled in the kidney (Fig. 1).
(a) A cavogram via pigtail angiographic catheter showing the intravenous position of one of the right neprostomy catheters within the IVC (arrow) through right renal vein (curved arrow). (b) A fluoroscopic spot image showing simultaneously inflated balloons within the IVC (arrow) and right renal vein (curved arrow). (c) A cavogram post deflation of the right renal vein balloon (arrow) and complete removal of the misplaced nephrostomy catheter showing no contrast extravasation.
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This showed the aberrant pigtail catheter was likely within the IVC through the right renal vein (Fig. 2a). A large compliant (Coda) balloon was placed in the peri-renal IVC (Fig. 2b). A 6 x 20 mm balloon was placed across this area (Fig. 2b). The IVC Coda balloon was then exchanged out for a pigtail and did an IVC venogram which showed no evidence of extravasation from the IVC (Fig. 2c).