Suggest Treatment For Cyst In Humerus Bone

I had a bone cyst in my left humorous and broke the bone several times when i was younger, they injected cortizone into the bone i guess in effort to regernate bone. This was when i was 10 and now at age 24 im curious as to if there is treatment available to fix this issue. Ive recently had xrays on the left side and it was notice the bone is still hollow. whats out there now?