Transurethral Microwave Thermotherapy is a minimally invasive BPH treatment. This technology uses heat energy to shrink the enlarged prostate tissue thus alleviating urinary symptoms. The treatment is done in the office and takes approximately 45 minutes. With local anesthesia it is generally well-tolerated by patients and most do not require post-treatment catheterization. Due to the gradual effect of the heat energy, most patients remain on their BPH medication for several weeks while the prostate shrinks and symptoms improve.