METHOD: Beyond postoperative suspicion, retrograde pyelogram was performed, the images of which are displayed, and demonstrated the fistula. RESULTS: Treatment has been definitive nephrectomy after failed attempt to seal the fistula with suture and TachoSil. CONCLUSIONS: Although radiofrequency ablation can be a valid technique for treating small renal tumors in patients with high morbidity, it is not without significant complications as described in this case, despite the precautions taken.
METHOD: Beyond postoperative suspicion, retrograde pyelogram was performed, the images of which are displayed, and demonstrated the fistula. RESULTS: Treatment has been definitive nephrectomy after failed attempt to seal the fistula with suture and TachoSil. CONCLUSIONS: Although radiofrequency ablation can be a valid technique for treating small renal tumors in patients with high morbidity, it is not without significant complications as described in this case, despite the precautions taken.