Topic: confused about lack of evidence of cc
my brother's Cleve Clinic doctor is consistently telling us that CC doesn't grow in a mass, there isn't a mass in my brother, and that the fact that the 2 biopsies and all the marker tests (CEA & CA19-9) are negative doesn't mean anything and that those tests very rarely help in diagnosis. Looking through the boards here, that just doesn't seem to make sense. Doctor has said that he is giving us this CC diagnosis because they've ruled out everything else. We don't really doubt him, but....
is this lack of evidence common?