elcome to the New York Presbyterian Hospital Endourology Website. The field of endourology encompasses the treatment of stone disease as well as the use of minimally invasive surgery and its applications within the genitourinary system. In this website you will find a guide to kidney stone disease with descriptions of why and how they occur, what types of problems they may cause, and options for nonsurgical as well as surgical management. In addition we will provide information regarding new minimally invasive surgical techniques including laparoscopy and their application to the genitourinary system.