Re: skin cancer untreated
As stated previously, a dermatologist is your best bet. If, and that is a big if, this is skin cancer, it sounds as if it might be basal or squamous cell. Either of these are fairly common facial skin cancers, and caused from sun exposure. Good news? They are both extremely slow growing cancers and can be present for years (we are talking decades, in a lot of cases) before they can spread deep enough to affect the blood stream. Definitely get this checked out, but it's been 10 years, give or take? I doubt it has spread to the blood stream - yes, basal and squamous cell carcinomas are that slow growing.