Luckily, it turned out to be just a contusion(basically a bruise) that swelled on his neck. The Eagles don't see the all pro having any problems with it in the future.
Obviously Andrews, who has already blossomed into one of the if not the best lineman in the game, is an invaluable part of the future of this team. Losing him to some freak neck injury would have been devastating. Good to hear the "Big Kid" is going to be back pushing around and bullying opposing defensive lines next year.