Being a dentist, I probably have a very different perspective on this. My science background has allowed me to see my cancer only as it was. A lesion on my tongue, that looked absolutely harmless. In fact, it looked so harmless, that I never even suspected cancer and never even thought of photographing it, as I might have, if it had been on a patient's tongue.
I could, however draw it, just as it appeared, sitting on the lateral border of my tongue, like so many other harmless looking lesions that I see in the books that I read about oral cancer.
Jerry