Sri Lankan doctors successfully remove world's largest kidney stone.

Doctors in Sri Lanka have removed the world's largest kidney stone from a retired soldier, Canistus Coonge, which weighed 801 grams, over five times the weight of an average male kidney. The stone was also 13.37cm long, compared to the average kidney, which is about 10-12cm long. The medical marvel has been recognised by Guinness World Records.