Tumor Naming Contest

My endocrinologist called with results from yesterday's PET/CT scan. He says the scan does show what appears to be a small (5mm) malignancy in my neck opposite the side from which the earlier tumor was removed. There is no other evidence of the cancer. His recommendation is to keep an eye on it but to otherwise just continue the strategy of suppressing it with a slightly-higher-than-necessary dose of levothyroxine. I'm back to the occasional blood-work & ultrasound regimen until something changes.

Since it's going to be around awhile, I figure I might as well name it. What should I call it?