3.0T MR-Guided Laser Ablation of a Prostate Cancer Recurrence in the Postsurgical Prostate Bed

Biochemical recurrence of prostate cancer after definitive therapy with radical prostatectomy occurs in 25%−30% of cases. The first known case of magnetic resonance (MR) imaging-guided ablation using laser interstitial thermal therapy (LITT) for locally recurrent prostate cancer after radical prostatectomy is presented. Using 3.0T MR guidance, two laser applicators were placed via a transperineal approach. Laser ablation was performed using MR thermometry to determine the ablation endpoint and lesion coverage. Dynamic contrast-enhanced MR imaging after the procedure showed no definitive abnormal enhancement. The patient had no change in continence or potency after the procedure.