Excerpt from an MSK article...
" In recent years, a new treatment strategy known as focal therapy (partial gland ablation) has emerged for prostate cancer considered to be “intermediate risk” — mostly, small tumors confined to one area of the prostate. At Memorial Sloan Kettering Cancer Center (MSK), researchers have been working closely with an advanced focal therapy approach known as high-intensity focused ultrasound (HIFU), guided by magnetic resonance imaging (MRI).
Now a landmark clinical trial has demonstrated this less-invasive method works well for many patients. The phase 2 trial, led by MSK urologic cancer surgeon Behfar Ehdaie, looked at a particular type of HIFU treatment, also called MR-guided focused ultrasound (MRgFUS), in men with intermediate-risk cancer. The novel approach effectively controlled the disease in patients and greatly reduced adverse side effects of treatment. This suggests many men with intermediate-risk prostate cancer can avoid surgery, chemotherapy, and radiation."
Link to full article...
https://www.mskcc.org/news/high-intensity-focused-ultrasound-hifu-can-control-prostate-cancer-fewer-side-effects