I would say go to see your GP, hopefully it would be the same GP you saw 15 years ago when you first had the problem. It's better to sort of these problems sooner rather than later. It's not supposed to come back but I think there's always a possibility of it coming back to a degree later in life, especially if alot of glandular tissue was left. I don't know if the NHS would do it, they don't always approve and I think it depends on your local PCT and the surgeon. But you should try your luck.