Trials of HIFU treatment have found few side effects. The healthy surrounding cells are not destroyed along with the cancerous cells and the procedure is non-invasive (does not involve any incision through the skin). This means only a short hospital stay is required and you will be able to return to normal activity after only a few days. The reported side effects are: Incontinence, Urinary retention, Urinary tract infections and Erectile Dysfunction. HIFU side effects compare favorably with more invasive therapies.