Hi there ~
I understand your concerns. The "knots" in you right hand, and above your left clavicle
need to be examined physically by a doctor and may be excised and sent for biopsy
to determine to kind of tumor
it is. It seems to me that they are benign and there is no cause for you to worry. Also the pain seems to be related to the knots and a condition called "neurofibroma" can cause that condition. I hope this helps.
Take care and have a lovely day!