Connection between bartonella & pancreatitis?

Can you tell me more about the connection between bartonella and pancreatitis? Is bartonella and hemobartonella the same thing?

My poor baby Buster, 17 years old is not feeling well. Vet told me Saturday that they thought it was lymphoma from the x-ray. Most of his bloodwork is pretty good. He is very slightly anemic, a little dehydrated from vomiting and his amylase numbers were elevated. I am not convinced as I think it may be pancreatitis. Pancreatitis is very hard to diagnose in a feline, I did some research and found that pancreatitis can cause a palpable mass and show as a mass on an x-ray.

He was treated for hemobartonella in March with an antibiotic and prednisolone. I think the prednisolone (a steroid) has caused him to have IBD and now pancreatitis. I hope I am right even though pancreatitis is not a fun thing to go through. God I HATE steroids. Dn't EVER let them talk you into using them unless you absolutely have no other choice--they do awful things to a body. They are really way too quick to try and prescribe those awful pills.

The vet even wanted me to start him immediately back on prednisolone again to shrink the tumor even though they are not sure it is a tumor. If it is pancreatitis it would be the worst thing in the world to give him the steroid again. I am going to have an ultrasound done, but giving him a few days to hopefully feel better from the fluids I am giving him at home and the easy to digest i/d science diet. He has not vomited since I started giving him sub-q fluids

This is the first I have heard about this possible connection. I have a cat that has had five episodes of suspected pancreatitis starting at 18 months and he is now three. I have also noticed here recently that he might have the beginnings of some gum problems, even though I work on his teeth best I can with a finger brush and some toothpaste for pets once or twice a week. He is due for his annual exam in July and it doesn't seem to be bothering him, still eating fine, so I haven't had him to the vet for his gums. I guess there is also a possible connection with early gingivitis. I'm going to ask the vet about this when I take them in July but from what little I can find on the internet this possible connection is very new so I don't know if she will know anymore than I have been able to find on the internet. We have a vet school at Ohio State here in Columbus but I think they only see animals on referral. I am originally from Kansas and the vet school at Kansas State seen animals for routine appointments, I really wish OSU did the same thing.