A week ago I found a lump under
my left clavicle, It is right in the middle about hald an inch below my clavicle. It is hard and not tender ot painful. I thought it could be a swollen lymph node, but it doesn't move. It almost feels like it is attached to the top of my rib cage. (I am a 20 year old female, normal general health)
I went to the doctor and got a blood test, urine test, and chest x-ray. Everything came back normal.