It sounds like they are giving you good information. Your concern is understandable. sometimes medication doesn't always work for every pet, thats why your vet probably wanted to let you know so that you would be prepared if it didn't work. They probably wanted you to be able to make an informed decision on her care. It is necessary to try to get the liver function back to as close to normal as possible in order for it to be able to process anesthesia better. I'm curious, how big is the cyst on her back?
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