May Be Caused by

 Common

Chordoma

Fracture

Hemangioma

Insufficiency fracture of sacrum

Langerhans cell histiocytosis

Metastasis

Myeloma

Notochordal remnant

Paget disease of bone

Plasmacytoma

Rheumatoid arthritis

Schmorl node

Spondylodiskitis

 Uncommon

Aneurysmal bone cyst

Brown tumor of hyperparathyroidism

Chondroid lesion

Chondrosarcoma

Diastematomyelia

Ewing sarcoma

Fibrosarcoma

Fibrous dysplasia

Giant cell tumor

Gout

Hemangioendothelioma

Hemangiopericytoma

Hydatid disease

Kümmell disease

Lymphoma

Malignant fibrous histiocytoma

Meningioma

Meningocele

Neurofibroma

Nonossifying fibroma

Osteoblastoma

Osteoid osteoma

Osteolytic osteosarcoma

Rhabdomyosarcoma