Here We Are Again

I took Duncan to the vet yesterday. He's generally fine except for the enormous tumor on his neck. But we're once again faced with the dilemma of making choices. I'm not really sure what to do. We can just let the cancer run it's course, or perhaps do a little radiation and a de-bulking surgery in hopes of reducing the tumor. At this point, it will become very large and ruin his quality of life. That's the end we're looking at. And it's not pretty. He'd probably take surgery well, he did last time, but who's to say? What should we do?