During a procedure known as laser lithotripsy, urologists use a small, video-guided laser to blast painful, potentially damaging kidney stones to smithereens. It's better for the patient if urologists ...

A vial containing some of the bladder stones flushed from the dog in the cystoscopy photo. (This patient did not require the use of thulium fiber laser lithotripsy.) LEFT: Dr. Joe Bruner examining a ...