I want to thank every one for their responses. Leon went to see the RO on Friday. He feels that there is nothing to worry about. The slight uptake was in his last PET Scan too and he feels that this is normal physiological changes. I told him that I heard doctors were getting away from PET Scans and his response was they need some type of test to give him to see how things are going and since Leon cannot have an MRI (due to having some metal in his body)he has to have the PET. RO scoped him and said everything looks great. Leon has no complaints. RO said he will see him in 3 months. ENT will see him next month. So I think we can breathe a sigh of relief? Again, thank you for your responses.