Etiology (alphabetic order)

 aneurysmal bone cyst
 benign fibrous histiocytoma
 brown tumor
 chondroblastoma
 chondromyxoid fibroma
 clear cell chondrosarcoma
 dedifferentited chondrosarcoma
 osseous fibroma (metaphyseal fibrous defect)
 fibrous dysplasia
 Langerhans cell histiocytosis
 malignant fibrous histiocytoma
 malignant lymphoma
 osteoblastoma
 osteosarcoma
 pigmented villonodular synovitis
 telangiectatic osteosarcoma
 tumor-associated osteomalacia
 unicameral bone cyst
 osseous xanthomatosis