Geez, Mike, haven't you reached your medical limit yet?!!! How is this fair?
That's why I've always hesitated to have more immunosuppressants. We had an outdoor pool growing up, so I'm sure I'd be a pill away from skin cancer, too. Many people with MG don't really have a choice; they need that kind of treatment in order to live.
Have you seen a hematologist/oncologist? They're the cancer experts, not a derm guy. Interesting how squamous cells can grow inside the body, not only on the skin.
Start juicing (I like carrot/apple/spinach!) and getting a lot of dense nutrients into your body. And please take vitamin B12 daily. At least 10 mg. Mayo proved years ago that B12 goes in to the cancer areas in an attempt to heal that. Take the sublingual kind, so that it goes to work in the bloodstream right away and bypasses the liver (which converts cyano B12 into methyl B12).
You'll be in my thoughts, Mike, as usual. I'm sorry you have one more thing to deal with.

Annie