Hello I'm so scared. My daughter has a hard lump on her clavicle it feels hard like bone and doesn't move which is terrifying as people are always saying if lump is hard and doesn't move it's cancer. She has had an X-ray of the clavicle and the bone appears to be ok and we are now awaiting an ultrasound. Everything I've read points to something sinister does anybody have any other idea what it could be other than cancer.