It is localized, as stated, and very slow growing, as well as non-life-threatening, according to the surgeon. In fact, this is so slow growing in my case that it would have likely taken another 2-3 years before anyone would have even been able to feel it in my neck. It's very early stages, and they said if you have to get any kind of cancer, it should be this, cause it's very easy to treat and remove completely.