Hello vets! Thank you for your time and answering questions.
My kitty Kyo (Key-oh), age 13y 8m, has been diagnosed with a large (0.75" x 0.5" x 0.76") pituitary tumor (likely non-acromegaly - his IGF-1 was 3 points above normal). We have him on steroids and finished 3 rounds of SRT on Thursday, August 11, 2023. He is doing much better so far (rarely pacing or yowling, sight seems improved, less zoning out, eating better again though still not purring). The only thing out of control is his diabetes due to steroids with numbers spiking in the low 300's and dropping to 60 (using Libre 2 sensor). His internal specialist recently switched him from 1.5 iu of Prozinc 2x day to 3 units of Tuojeo once per day but even on Tuojeo his numbers are all over the place including dropping to 60 last night 3.5 hours after dosing him. However, he's only been on the Tuojeo since Tuesday, August 22. His internist is supposed to look at his graphs today and go over next steps and hopefully we'll be making some adjustments.
However, my biggest question on this is that someone (non-vet) in another group mentioned Low-Dose Naltrexone (LDN) as an option to treat the tumor but Kyo's radiologist oncologist hasn't heard of that for this. I'm wondering if this woukd be something worth trying and if so, which of his vets should I talk to about it - regular vet, neurologist, internist?
Here's a picture of the boy after his treatment finished in the graduation bandana the team signed and put on him.