Hi adolmakr. I don't have any answers of you, but I'm hoping to help you out with a few suggestions.
Here is a link to an overview of melanoma from the American Cancer Society. http://bit.ly/NFSEuG ACS also offers many resources, including a help desk (see number to the right and bottom of this page) where they might be able to give you answers to your questions, or tell you where you can go to get those answers.
Additionally, I thought it might help to read through the journeys and/or reach out to others on WhatNext dealing with melanoma. Some folks include @happydad @sbeck08 and @MamaFagan03.
Please keep me us posted and let me know what else I can do help.