I have noticed over the years watching threads that people regard a melanoma as a skin cancer of the worst type.....it isn't.
The majority....the vast majority of melanomas (moles) are benign. It is only when a melanoma (mole) changes in characteristics does it become a cancer....a malignant melanoma which is dangerous.
If i have preached to the knowledgeable......then forgive me.
I photo my moles so I can see if they alter. I have one on my foot which my GP says I need to monitor, as foot malignancies can be particularly aggressive.