Sri Lankan doctors remove world's largest kidney stone, setting a new record.

Doctors in Sri Lanka removed a kidney stone larger than a baseball from a retired soldier, which has been confirmed as the "largest and heaviest kidney stone" ever extracted through major surgery by the Guinness World Records. The stone measured 13.372 centimeters long and weighed 801 grams. Medical treatments for kidney stones usually involve breaking the stone into pieces if not complete removal.