Help! Exactly what is neuroblastoma?

Apparently none. The cause of paget's disease of bone remains unknown. Current speculation centers on a viral origin. The problem is local, not systemic. The bone self-repair, called remodeling, is accelerated, and there is more removal than replacement, which weakens the bone and sometimes causes pain and fractures. The parathyroid gland, which is an endocrine gland controlling bone metabolism, is not involved.
I am not aware of . Any glands, so far paget disease have no known cause.