hi
my newfie is 14 and has a vet check up every three months for severe arthritus, on his last check the vet can feel a tumor or large lump in the spline, vet said the size of his fist?but can anyone tell me could he be wrong? could it be to do with old age!has anyone else had this prob? hope to get some replies

At 14 your friend is a good age for a Newfie ;)  Sadly I have to say I lost my 14 year old Lab cross 2 years ago with a haemangiosarcoma of the spleen - it had metasized (spread) to her lungs by the time it was caught and within two months breathing became difficult for her.  the biggest problem with spleenic tumours is that as they have a very good blood supply they can rupture - which is why surgery is not always an option.

Ofcourse your vet could be wrong - it wouldn't do any harm to have a second opinion, if it is a haemangiosarcoma then these are often found in larger breeds in old age.

I'm sorry I can't be more positive, but enjoy your friend for whatever time he has left, and have the courage to make that final decision when the time comes - he will thank you for it, believe me {{{{{{{hugs}}}}}}}