Queen Elizabeth II Leaves Hospital

Was admitted for symptoms of gastroenteritis

(CNN) -- Britain's Queen Elizabeth II was discharged Monday from a London hospital, where she was treated for symptoms of gastroenteritis.

The 86-year-old monarch had been taken to King Edward VII's Hospital on Sunday morning "as a precautionary measure," a Buckingham Palace spokesman said, speaking with customary anonymity.

The queen smiled as she left the hospital Monday.