This story is a wild fucking ride. The short: He doesn't have cancer. The bad: The first vet probably qualifies for medical malpractice.
Thursday he was fine. He laid down and hurt himself severely though. He has hip dysplasia and permanently knocked his hip out of socket. The first vet diagnosed him with possible liver cancer and maybe only hours to live.
Took him to our regular vet this Friday morning and they gave him proper diagnosis. The first vet said they felt a mass, saw it on the xrays and sonogram, and his bloodwork showed likely liver cancer. That vet later called me and said they gave us the bloodwork on another dog by same name and age.
Our regular vet did the bloodwork that wasn’t done and found no issues. On sonogram and palpitation nothing found. In the xray sent by the first vet no mass found but his hip dysplasia has advanced to the point where it looks like his hip is no longer in socket. His current treatment is an increase in dose in gabapentin and continuation of his novox. We're using a sling to give him additional hip support. He's getting three courses of cold laser treatment for his hip, and what we're hoping is that he shows sufficient progress that he forms scar tissue at the most problematic hip over the next two weeks, giving him reduced pain and additional mobility. The vet said that if he doesn't show improvement by Monday we may need to euthanize him.
Something I suspect now: The Tramadol (prescribed by the first vet and continued by the second) is making it look like continued symptoms when he is, in fact, improving. Throughout the course of Friday he was showing steady and marked improvement up to the point that he was largely free from needing the puppy handle (waist sling) except in cases of going up and down steps. After giving him his Tramodol last night, he went to sleep for a couple hours, then woke up like he was in extreme pain and was basically incapable of walking. I think the Tramadol might be causing dizziness which is compounded by his poor leg strength, arthritis and hip dysplasia, and he *looks* like he's in pain because the Tramadol is giving him high anxiety as a side effect. The high anxiety would explain why, after a while he keeps getting up and pacing the house and repeatedly going outside just to look around and sniff.
If I'm right about the tramadol, then a great many of his symptoms are a product of that first vet's misdiagnosis and a medication he's having a very poor reaction to.
I think I'm probably right, and I hope I'm right, because taking him off the Tramadol would show excellent and rapid improvement. Based on his improvement Friday, maybe even approaching his prior state of mobility before his incident on Thursday with his revised drug schedule..