Here's the latest update on Tova:
She made it through the surgery and seems to be recovering well. The good news is it is not cancer. But what it is is hard to explain. The vet said it is unlike anything he has ever seen. To dumb down the much better medical explanation, Tova had most likely gotten ahold of a bone, which broke off and lodged in her esophagus. Many dogs have died from situations like this but Tova is a fighter and suffered (probably for quite some time) in silence as things backed up behind the blockage. It blocked her breathing and eating. Her body was pretty miraculous and created a new pathway (or pocket) for things to get through which is what kept her alive. But over time the new pathway backed up too. We didn't know any of this until we took her to a highly recommended vet in Santa Fe after returning from our trip. The vet did an x-ray and found the blockage.
Today's surgery removed the blockage and now that she got through that and the initial (very risky) recovery phase he says she seems to be doing very well. Breathing has improved tremendously already. She will stay at the vet's for a few more days for observation. She's not out of the woods yet but we have gone from hearing things like "little chance of survival" to "very hopeful" in just a day.
Thanks for your continued love and prayers.