Should we give my 10 yo German shepherd a splenectomy?

Recently our local vet felt a tumor in his abdomen, she believed it could be on the spleen. He had some trouble one morning and she urged us to visit an emergency centre because she thought it had ruptured and he was bleeding out (she was out and couldn’t get to us in time if it was the emergency she believed it was).

Thankfully he was fine, he was recently recovering from a small surgery near his elbow so the cone irritated his airway and he was coughing and swallowing air and that’s what was causing the abnormalities we saw. But the X-rays and an ultrasound showed he had a small tumor on his spleen and a larger one from a retained testicle. This made us have 2 different opinions on what the next steps should be.

Opinion 1: They believe he should go through the splenectomy and get the 2 tumors removed. They are worried about a possible renal disease with how his blood work came out, and they mentioned it could be worsened by the anesthesia.

Opinion 2: Palliative care. Keep his tumor monitored regularly, but not getting the surgery. This vet mentioned that they have never had a dog survive 2 months after the splenectomy, possibly a 1/10 chance. They said that if he gets the surgery it definitely should be only gas anesthesia, but they aren’t worried about the renal disease. They are worried that the wound won’t close and will become a chronic issue.

-The two vets have seen his x-rays and his blood work. -He is having a special diet for his kidneys. -He was diagnosed with Ankylosing spondylitis and we are treating it as the vets recommended (they do agree on this treatment and that he is not in pain for the time being). -We aren’t delusional, we know he is a geriatric dog. -We truly don’t want him to suffer and we will be seeing another vet for a third opinion.

• We want to give him as much time as possible with us, but we want to put his needs and wellbeing first. Our priority will always be his life being as pain free and happy as possible.

I just would love some other opinions on the matter from dog owners that their friends have gone through the surgery while being a big breed and geriatric. I truly just want the best for him and not have to deal with a traumatic death.