Hi, I'm new here and overwhelmed!
I have a 11-12 year old, 36 pound mixed breed spayed female dog, named Blackberry. She is in very good health aside from the Cushings. She has textbook symptons: excessive drinking/urinating, ravenous appetite, a potbelly, and some panting.

We just got diagnosed this week with the probability of adrenal gland tumor Cushings, through a LDDS test. These were her cortisone levels: pre 7.7, after 4 hours, 8.5, and after 8 hours 8

We have started her on Vetoryl (trilostane) 10 mg; 2 capsules by mouth 2x a day. She will go through an ACTH stimulation test in 2 weeks.

We are considering an ultrasound and surgery with a specialist. Trying to sort through all the information...I'm starting to understand that the medicine will only manage her symptons, not extend her life? Does anyone have any input or advice? I'm also seeing that the cost of a year's medicine is approximately the cost of the ultrasound AND surgery...
Any input will be greatly appreciated. I've had this dog since I was 18, and she is my dog-of-a-lifetime. We have always been together, she's my shadow.