One of my kitties recently had to have all her teeth pulled and when they examined her prior to the surgery my vet said her small intestine was thickened. They also found an elevated protein level when they did the blood work. Now I know those two things together can point to either IBD or lymphoma. This cat has never had any symptoms of IBD. The vet wants to recheck her blood work in a month or so and see if the blood protein level has gone back to normal since the inflammation in her mouth could also cause that to be elevated. What I'm interested to know is what other diseases or conditions could cause the thickened small intestine? Doing endoscopy and subsequent biopsy at $1600 isn't going to be possible. I want to do everything I can for this kitty but my pockets aren't deep. Is there any other way to diagnose lymphoma?