Focal Therapy, it's like taking care of the bad spot in the apple instead of throwing the whole thing away.

When we can distinguish “significant” prostate cancer from non-aggressive prostate cancer, ablative treatment options can be considered. When minimally invasive ablative therapy is used, it can treat the entire prostate gland or just the area with the known disease. Treating only the “significant” prostate cancer is known as focal therapy. Focal therapy eliminates the aggressive cells without destroying the rest of the prostate. This minimizes the potential for urinary incontinence or sexual dysfunction.

Focal prostate treatment is similar to the advancing technology for breast cancer. Today, lumpectomy has largely replaced the radical mastectomy.  Another way of thinking about focal treatment is to consider an apple with a bad spot. Rather than tossing the whole apple, only the bad spot is removed.