I have a cat, male, 15 years, previously otherwise healthy (until yesterday he's always been active, healthy weight, energy level about the same as a 7-8 year old) except for a heart murmur since birth, until an ER visit last night diagnosed critically low potassium and moderately high blood sugar. Working theory based on x-rays and bloodwork so far is hyperaldosteronism due to a possible tumor on adrenal gland, non-metasticizing, unknown if malignant. He's getting ultrasound today to confirm.
I have been researching treatment options if it comes back positive as a tumor, which I have a feeling it will.
All the options so far seem very high risk. There's an adrenalectomy, which apparently can go either very great or very poorly, and from my research this won't be an option if the tumor is bilateral or there's not much functioning gland that can be saved.
There's Lysodren, which appears to have risky and awful side effects. There's also ketoconazole, which can cause liver damage, which worries me because of his age although I believe him to be otherwise healthy.
I'll also be talking to the doctor at the hospital for more options today, but my question for you guys is are there any other treatment options I can add to my list? I'm trying to build as comprehensive a list as possible from internet research, talking to the doctor, and other people's experiences.
I'm looking both for personal experiences from pet owners as well as cited treatments and opinions from any professionals here. I am open to natural treatment suggestions as well.