The nerves responsible for erection are located very close to the surface of the prostate. These nerves "live" in what I would liken to a blanket draped over the prostate. In a non-cancerous (benign) prostate and prostates where the cancers have been detected early and are not aggressive (low grade cancers), the nerves (the blanket) can be easily removed from the prostate and left behind. Leaving these nerves behind will hopefully allow them to function normally to produce erections in the...