I have a domestic long hair that is about 11 years old and used to be almost 24lbs.
About 6-7 weeks ago, he stopped eating and losing weight (currently around 12lbs). At first, when I put food, he licks it a little bit but doesn't eat/chew. It's like he wants to eat but doesn't. Gradually, he stopped eating altogether.
I thought it might be a tooth problem and took him to the dentist. The dentist found a resorption tooth and removed it (did not have to do a root canal). A couple of days after the surgery, he still didn't eat and was losing weight. At this point, I also noticed fluid build up in his abdomen.
The first vet I took him to did an ultrasound, gave him antibiotics, and said that the ultrasound revealed some kind of inflammation in the intestine.
The second vet also did an ultrasound and found a mass in the small intestine. They withdrew some of the mass using a needle for analysis. They told me that the analysis will reveal if he had lymphoma or not. Unfortunetly, yesterday the test results came back as "non diagnostic" (I think it means the test was not conclusive). They also added a feeding tube.
Both vets did extensive blood tests, nothing was found except low levels of albumin.
Yesterday, he became so weak and agitated, I took him to the ER. The doctor there said based on all of the previous history that the other 2 VETs faxed over, there is a 95% chance he has terminal cancer and that it has spreadout throughout the intestine.
They said they know it has spreadout because they can tell by the fluid and the because the rest of the intestine was not absorbing vitamins/food properly.
They said that from the ultrasound the other 2 vets did, they can see that the "mass" has covered all around the small intestine.
They scheduled him for surgery today where they will go in and remove the mass from the small intestine and will do exploratory surgery. They will then do analysis on the mast to see what kind of cancer it is.
They said that even with the surgery, he will not eat and will waste away.
Is there any chance that it could just be a non-benign tumor....or even just a foreign object blockage?
How can they be so sure that it has spread throughout the intestine?
From my research, it looks like cats can also have fluid build up if they don't eat. I mentioned this to the VET but they said that in this particular case, it is related to cancer.
What is the likely prognosis?