NEW : ` She is set to announce her departure from TV news . Walters , 83 , had a health scare in January . She began her career on ABC 's ` ` , '' in 1961 . ` ` There 's only one Barbara Walters , '' says ABC News correspondent Barbara Sherwood .
NEW : She is set to announce her departure from TV news . Walters , 83 , had a health scare in January . She began her career on ABC 's ` ` , '' in 1961 . ` ` There 's only one Barbara Walters , '' says ABC News correspondent Barbara Sherwood .