Yes thanks that was confusing to me, the cancer started in the neck,it went on the lung,it was detected on the lung first thru blood markers, but all the time it was in the neck undectected. Because blood markers go up only when on the lung. At first they called it lung cancer, i had 4 cemo's. It was after that when it showed up in the neck with a clinical exam. The docs here were preplex,it was the same cancer that was on the lung, i got no answers here, so i went to philly to c.t.c.a. they give me cat's of the neck alot, because that is where it could go undectected again. And of course pet scans once a year, and chest x-rays. That must be why the doc's here called it lung cancer then because the merkel cell are consistant with lungs....oh it gives me a head ache, my docter is convinced without erubtux things could have gone badly, that was a new drug in 2005,so was avistan. Igot them all. Thanks for your answer that helps.