It was reported insufficient roll off occurred.The patient underwent a radiofrequency ablation procedure on their kidney.An rf generator 3000 and an rf probe were used.Computed tomography (ct) imaging at this time showed everything appeared normal.At the 3 month follow up appointment it was observed that the tumor was not ablated.No patient complications were reported.It was further reported that roll-off, which indicates the clinical endpoint, was achieved at the time of the index procedure.During the index procedure, a ct scan is used for placement of the probe only, they do not perform a ct with contrast to confirm ablation.The ablation is confirmed at the 3 month follow up using a ct scan with contrast, which in this case revealed the tumor was not ablated.
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