Hello, I hope I can find some help here.
My dog is a 12 y/o small mixed breed (our vet thinks Jack Russell, Sheepdog mix) who a few months ago developed a lump on the outside of his right front ankle. It is kind of hard to touch but still is a little squishy, almost like a harder paw pad feeling. It also seems to be movable if I wiggle it around.
Pre-existing conditions/procedures include: colitis since he was a puppy (he is on special food for it), and he’s had both cruciate ligaments in his hind legs done. He was checked a little under a year and a half ago for other lumps (turns out they were lipomas) while he was getting his second cruciate surgery, as he was already going to be under anaesthetic. Our vet also suspects he has arthritis, but nothing serious enough to warrant treatment.
He doesn’t seem to be in pain with it, and still has his appetite and happy disposition, but considering his age and the location of it from my research I am afraid it might be osteosarcoma. However it is also the leg that he has always folded under him when he was lying down, and I do know some dogs develop lumps from pressure points. Or it could be another one of the lipomas he has delveloped, or something else entirely.
My parents don’t want to investigate this further considering his age and lack of behavioural changes. They want to avoid putting undue stress on him (which I agree with) but also don’t want to know if it is something sinister or not. They have also said that if it is cancer, that opening it up for a biopsy and exposing it to air can make it spread quicker (don’t know if there’s actual theory behind that?) and that he is too old to be put under anaesthetic just for this keeping the risks in mind. They have told me the ultimate decision to get it checked out is up to me, but I’m not 100% sure what I want to do. It could be nothing, but it could be something.
This dog is my life, and I worry about everything with him. Any professional advice would be great, thank you.