Pulsed dye laser lithotripsy--currently applied to urologic and biliary calculi.

The flash lamp excitation of coumarin dye to produce light energy of the specific wavelength of 504 nm is the basis for the new wave of pulsed dye lasers. Numerous urological applications have been developed. Treatment of ureteral and renal calculi has proven to be an atraumatic and effective treatment modality. Most recently, this technology has been applied to the endoscopic treatment of biliary calculi. The authors review the most recent treatment techniques in both biliary and urinary stone disease.