Accute pancreatitis - is there hope?

Hi, our 10 year old has been diagnosed with accute pancreatitis today.
He had not been doing well, nothing serious (not eating well and a little lethargic) until a few days ago. It got worst so took him to the vet. Blood work didn't reveal anything except for reaction to infection. Gave him clavamox and prednisolone and fluids. No change in a week so back to the clinic, saw another vet yesterday. Fluid is accumulating in the belly. The second vet was awful and basically told us he couldn't do anything.
Took Milford to a third vet, they drew mor blood and ran the pancreas values. Just got the results and they are off the charts. Vet suggested an ultrasound, and then removing some of the fluid built up in his chest.
Fluid builds up because of low protein, which occurred because of not eating. We are now force feeding him with a/d and he is not throwing it up.
He deteriorated overnight, in the sense that his breathing is noisy, reason why the vet is suggesting the remove the fluid.
Even if we do this (remove the fluid) and if the ultrasound shows it is NOT cancer, is there any hope?
Anyone has experience with dealing with pancreatitis?

Hi I'm sorry your little one is struggling>i belong to the feline pancreatitis group @ yahoo.I recommend you join.Many members should have DR in front of their names.They have helped thjousands of kitties all over the world.Super people & they will help you help your kitty.You will have to join Yahoo if you don't already.just google how to join yahoo.Free & easy.They deal as ell with triaditis and inflammation of all organs of a cat.Compassionate but a wealth as per treatments etc Pls make your posting new member just diagnosed acute pancreatitis need Help.Ok?.if you have bloodwork done they will want to see all of of it.yes they can read bw & understand what is going on.Any test results you have you are privy to copies from your vet.I'm assuming you had an Fpl1 test done & sent away.If you don't have anything pls contact your vet & see if they can email you them.The panc groups needs all the specifics & is very painful for a kitty.HTH Hugs C their link is

https://groups.yahoo.com/neo/groups/Feline_Pancreatitis_Support/info

Thanks so much,
Not sure why I had not thougt of it. I joined a few yeara sgo when one of our cate had hyperthyroidism.
I will definitely!