Hi Sally & Jerry, my apologies for starting a new thread on Z dog and the confusion.  Thank you so much for replying, I really appreciate it.

The second opinion is definitely the best course of action, despite it putting a slight delay in what we do for him.   I just do not like swollen lymph nodes.  If it indeed has gone to his lymph nodes (So rare for osteosarcoma), then I am afraid that does mean some deep considerations into what is best for him.  The prognastic factors for that are worse than lung mets.  I understand statistics are just that, but I do have to pay attention to and understand what this could mean, and consider it and what will be best for him.

We love this dog so much.  He's an "attached at the hip" kind of dog.  LOVES people and attention and just being around us.  If I'm in my little office cubby hole at home, he's on the Big Barker dog bed next to me (We got it for him cuz he would lay on the hard floor just to be near me).  I want to do what is best for him, with the least amount of pain and trauma.

We have an appointment with the oncologist tomorrow morning, and I've scheduled the surgery for Thursday, and we all know, including the surgeon, that it could change.  He visited everyone at the surgeons, jumping up on counters, walking into their space to say hi... they know him well already.   I hope like hell it's nothing.  Or something minor.  But I will admit I am scared.  I'm preparing myself emotionally for the worst, so my hubby and I can make the best decisions for our boy.  Have never known another dog like him.  

In terms of how he is feeling.  You gotta understand our loon boy.  He is a dog that is 1000% all the time.  He's very athletic, hyper, intense, sweet, loveable.  He's also not for the faint of heart.  He's hiked many mountains and swam in some beautiful lakes.  He and his sister/litter mate are best of buds.  This afternoon I went out for a hike and put them both upstairs in our bedroom so he wasn't roaming the house going up and down stairs.  He has a mild limp, and a decent swelling on the leg.  His limp is barely noticeable, but I know it has to hurt.  Maybe it's the difference with the disease in the ulna vs. the radius or any other weight-bearing bone because it is hard to see that he is hurting. He is on minimal meds.   In fact, when I got home, I went up our deck stairs to the bedroom to let them out, and he CHARGED out and flew down our deck stairs like some kind of crazy dog.  I just kept thinking CRAP he is impossible to slow down!  Wagging and squeaking (yes they both squeak) and jumping crazy labrador.  One would think I was gone for 2 days.  I try not to let him jump up, but he wants to give love bites.  Labrador... forever a puppy.

Sharon, Wally, Astra(woof) and Zale (woof)