The urologic tradition of Preci.
The Preci School was not as well known as those of Salerno and Montpellier, and its members were often confused with quack doctors from nearby Cerretani who begged for alms for medical and religious foundations as a profession. The Preci School surgeons performed lithotomy, phlebotomy and castration, designing and making their own instruments, which were well ahead of their time and used by other surgeons only centuries later. Lithotrity was commonly employed using such tools, before it was known elsewhere. They practised cauterization and disinfection by fire. The Preci School was also familiar with differential diagnosis and uroscopy, which were essential before treating stone disease. The school came to an end after 1751, when a Papal edict declared that only surgeons with a degree could remove stones.