Secondary aneurysmal bone cyst arises in -
High-Yield Explanation
Most of the time (80%) aneurysmal bone cyst is primary, and no other pathology is found.
Secondary aneurysmal bone cysts (20%) occurs when bone changes of aneurysmal bone cyst occur in a pre-existing lesion:-
Giant cell tumors (osteoclastoma) : - Most common
Osteoblastoma
Simple bone cyst
Non-ossifying fibroma
Telangiectatic osteosarcoma
Metastasis
Fibrous dysplasia
Paget's disease
Chondromyxoid fibroma
Chondroblastoma