I had similar feelings to yours, Glitterbag, when our little dog was diagnosed with Cushings over a year and a half ago. Raised liver enzymes, a benign growth on his pituitary gland, that was scary. Our vet’s reaction was reassuring – it was a preferable diagnosis to diabetes, which was the other possibility, and that with treatment, the symptoms would disappear.
In our case, he hasn’t been able to be treated, so far. For the induction phase of the treatment, for a week or so, the medication needs to be very carefully controlled and given very regularly, with food. One of the most common symptoms of Cushings is a voracious appetite, so that’s not usually a problem. Our little guy has an inflammatory bowel disease, as well, and is a very picky eater, so giving him the meds isn’t advisable because of that. So … we treat the IBD and wait for it to settle, then we’ll deal with the Cushings.
Even so, in the past year and a half, his symptoms haven’t worsened, his liver enzymes haven’t risen (they were checked last week) and he’s our usual peppy pup.