i have this very soft golf ball size lump that is less pronounced in the morning than in the afternoon. it's been there for a while and i started noticing it more as i lean out and workout more. Had me very scared, but CT scan shows nothing and doc says she isnt worried at all. i have injured that shoulder in training over the last year, but i am confused on what it could be. doc says not a lymph node and it just frels like fat. thoughts?