stone-cutting). Aulus Cornelius Celsus wrote that Lithotomos developed instruments to break up and extract bladder stones. Celsus gave the first description of lithotomy as performed before and during his time, and the operation has ever since borne his name—the Celsian method. Etymology Lithiasis (stone formation) in the bladder is called cystolithiasis (), from cysto- (bladder/cyst) + -lith (stone) + -iasis (disorder). Other animals References External links Urological conditions