lymphedema and tumor markers

I was just wondering if lymphedema can affect tumor markers.  My tumor markers are not out of the normal range, I am just wondering. Mine have always been between 18 and 24, with the high number being 24 during chemo, 22 in the beginning and 18 at the end.  They have gone up two points since.  Currently 20.  I know this is still in the normal rage but I wonder if having lymphedema can affect them. The last two times I had them taken, I was a bit sick.  But as they never went down really (meaning down to zero after treatment) I wonder if the lymphedema can affect this number.  What else can affect the number.  I am talking about the 15.3 test.  I have read that other cancers, inflammation (is lymphedema considered inflammation) and even dehydration can affect them.  What else?  Just curious here....what do you know about tumor markers??