I'm so sorry. Sending hugs to you and gentle scritches to your Sherlock. I was in the two-cancer boat with Sweep this past year, and it is indeed a horrible blow. She was almost 11.5 when she broke her leg, but we opted for amp and chemo and she did well. We let her go in late May at 12.7 years old. There is no judgment here about which treatment route you take; you know your dog and your situation best. It is a hard road no matter what, and you will make the most loving decision for your boy. I hope the consult with the oncologist goes well. Please keep us posted.