Thanks for taking the time to give me some answers.

I have a 13 yr old (approx.) female cat, who has always been indoors, though she got out once for 3 days. I am not sure her breed, but I know she is a mix of calico and something else (that I thought was siamese, but not sure). She is about 13-15 pounds and has always been a chunky kitty since she got spayed.

Her medical issues over the years:
-Ear problems that was diagnosed as "protein buildup due to allergies". I just have to have them frequently cleaned out and as of the last year she has gotten mild doses of cortizone shots that have helped her ears (2 times total).

-She has always had tummy problems that comes and goes. She tends to eat very fast and vomit her food and then be hungry again. I know a lot of cats throw up from hair, but she has been excessive and never has hair balls in the vomit. I have thought it is stress, she seems to have a nervous tummy.

Just 2 days ago I came home to find her under the bed and wouldn't come out without a little force. She is always a very friendly/lovable cat and always greets me at the door and always has to be around people, so I knew something was wrong. Then I realized she had puked like 4-5 times around the house, almost totally without food. She was very lethargic, depressed and wouldn't touch food (totally unlike her). So I got worried and asked my nurse neighbor with 4 cats to look at her. She had a very rapid heartrate (like 250), so I called a 24 hour vet.

They saw her immediately. Her temp was 104.5, so he gave her fluids and then a shot of antibiotics, which he also gave me some to take home. When he felt around her abdomen before sending us home he got very concerned with what he felt. He said something didn't feel right, so he took X-rays and found her liver was 3 times it's normal size and pushing up against her stomach. He immediately said he thought it was cancer and that the diagnosis wasn't good. Basically telling me she wouldn't last more than a couple of weeks like this. I was devasted. He gave me the option of having ultrasound, but said it wouldn't really change the outcome and there wasn't anything that could be done.

I took her the next day for a second opionion and all he did was feel around and say that any kind of mass like that in that area (which he felt) wasn't a good sign.

She ate a little that afternoon, just nibbles of soft treats and some tuna. So I decided to take her back to doc #1 to have him give her more fluids and see what they could do temporarily to make her comfortable. They gave her a B12 shot and cortizone to help with immflamation. That night I got some fancy feast moist food and she has since been gobbling it down. She is still rather lethargic, but getting back to being more her normal self and eating great. She isn't drinking at all, but I was told with the sub-fluids they gave her twice and wet food she wouldn't be thirsty. She hasn't has a bowel movement since this all started (night before last), but she has peed.

The odd thing is her lab results came back today and it's all completely within normal limits. Said her liver functions are a smidge high, but nothing to even think twice about. She is also not jaundice at all.

We are probably going to proceed with an ultrasound and needle biopsy in a few days.

I was hoping you might have some thoughts as to what this could be?
Also curious if it's at all possible that she was born with a larger liver and since she has never had an X-ray we just had no idea? It would explain a lot of her problems over the years? The docs don't believe it's fatty liver because of the shape of it, but he said it's possible...just not likely.

Two other symptoms that she has had is excessive thirst and drooling.

Is it a mystery, should I be hopeful?

Thanks so much!
Jennifer for Cali-Sue

Optional Information:
Age: >12; Female; Breed: Cat/calico mix

Already Tried:
everything