1.   Because testosterone is essential to the growth of prostate tissue and prostate cancer cells, reducing this hormone has the effect of shrinking prostate tumors.

2.   All the competing procedures use heat to destroy some prostate tissue, on the theory this will relieve pressure and allow urine to flow more freely.

3.   The virus destroys normal prostate tissue as well as cancerous cells.

4.   This benign condition occurs when prostate tissue, after decades of dormancy, begins to grow.

5.   Microwaves pulse through a catheter threaded through the urethra into the prostate, killing excess prostate tissue.