@blc1951: Thank you for introducing yourself and providing this background information. I can well appreciate the anxiety you must be feeling as you await more information from your melanoma provider. It's a scary time waiting to hear the outcome; I find it helps to be prepared for all eventualities. I'll post this information from Mayo so you may be more prepared for diagnosis guidelines and treatment options if you're interested - it's not to alarm you as "invasive" can run the gamut of stages and optimistically with your diligence in skin checks it does appear you were likey to have caught this early, In any event, there would be a variety of options available to you that your doctor can discuss with you once all the results are available.
https://www.mayoclinic.org/diseases-conditions/melanoma/diagnosis-treatment/drc-20374888
As @budisnothome summarized, skin mapping uses high resolution photography to track skin changes (moles/spots) compared to baseline photo to focus on detecting suspicious growths for analysis. This can provide for earlier detection of skin cancer.

Will you let me know next week what your doctor reported and what the treatment plan will be?