Stage Ii And Now 2 Nodules In Lung? Help!

Hello everyone.  First time posting.  My dad was diagnosed with stage II melanoma about 2 years ago.  He had a surgical resection as well as lymph nodes removed.  The nodes were clean and the surgeon was very happy.  He did interferon for a year.  He has had routine imaging and blood work every 3 months.  Imaging had been fine and blood work normal.

Well, now he has 2 lung nodules on chest CT.  He is scheduled to have a PET next week.

I guess my post is more of a scared rant rather than a specific question.  I just can't understand how everything was looking good with negative nodes 2 years ago and clean blood work since.  now he has 2 nodules.  I guess the PET is going to be the critical study.

Does anyone have experience with a situation very similar to this?  Any thoughts or comments would be appreciated!

thank you.  he had a CT of the chest in 2005 and, from what i understand, these nodules were not there 2 years ago.  so, i really hope that it's not related to the melanoma...but i fear it is.  you are correct, he has done everything he was supposed to do.  this is what bothers me a lot.

 i just hope that we get good news with the PET scan.  at the very least, even if it is related to the melanoma, then i hope it would only be these 2 little nodules because you can go after a single organ metastasis aggressively with a better prognosis from what i have been told by an oncologist that i spoke with.

i am so scared for him.  oh, and my wife and i just had our first baby 6 weeks ago...his first grandchild.  this is eating at me because i so want him to take this time to enjoy her and not worry about statistics and prognosis.

Please view this Video, I believe it may be very helpful. Please let me know what you thoughts are. The Best of Luck!

http://wcbstv.com/video/?id=101812