Update. My father had surgery to remove the tumor. When the dr. went in he found another melonoma in the nodes under his arm that was more than he thought. He removed all of the node under his arm. We are still waiting for pathology reports to come back. Again, more waiting. The pet scan came back clear, but the isotope test that mornng came back with 1 hot spot and one slight hot spot. Why didn't the other melonoma come back on the pet scan? When the dr. came back to me after surgery and said that I was in shock. Now I am out of town and can not ask the dr. my question.