I had a melanoma surgically removed from the back of my neck about two years ago. Biopsy indicated 0.2 mm, Clark Level 2. Check up every six months. Last checkup, my dermatologist wanted to do a pet scan. I questioned it based on other opinions on the internet. Primary physician was not sure. So about a week later, I went to a different dermatologist and they did another full body exam. They did a biopsy on two spots on my back that were questionable. Turns out, one was melanoma. Again, about the same level as the one on my neck. It had been there for at least two years. I could not believe the first doctor missed it. Today, I go in for consultation with the oncologist. I am just trying to decide on the necessity of the pet scan.