Friend: Ex-British Prime Minister Margaret Thatcher in hospital after bladder operation

Margaret Thatcher is recuperating at an unnamed hospital after the former British prime minister underwent a bladder operation.

Friend Tim Bell said that the 87-year-old Thatcher went to see her doctor after experiencing some discomfort and had what he described as a "small growth" removed.

He said late Friday the operation was over and had been "completely satisfactory." He said he couldn't go into detail as to the nature of the growth and declined to name the hospital, saying he did not want it to be inundated with calls.

Thatcher has been in uncertain health for several years, having suffered a series of small strokes more than a decade ago.