Peyronie's disease first was reported by Fallopius in 1561. It was popularized in 1743 by Francois Gigot de la Peyronie, surgeon to King Louis XV of France, and has since born his name. Peyronie's disease (indurato penis plastica) is a condition characterized by the formation of fibrous plaques within the tunica albuginea. These plaques impede expansion of the tunica albuginea during erection, resulting in penile bending. In extreme cases, the plaques may induce a collarlike or an hourglasslike appearance in the erect penis.