UrologyChannel.com -Peyronie's Disease Peyronie's disease (also known as fibrous cavernositis or plastic induration of the penis) is the formation of a plaque or hardened scar tissue beneath the skin of the penis. This scarring often leads to painful erection and curvature of the erect penis. http://www.urologychannel.com/peyronies/index.shtml - More