osteoblastoma

Epidemiology

Uncommon

< 1% Primary bone tumour

Young boys

- second decade

Location

Similar to OO

Spine 30%

- especially posterior elements

Long bones 35%

Clinical

Back or limb pain

- pain less severe than OO

DDx

Primary

Benign

Osteoid Osteoma

Osteoblastoma

Osteochondroma

ABC

Hemangioma

Giant Cell tumour

EG

Malignant

Chordoma

Ewings

Osteosarcoma

Chondrosarcoma

Lymphoma

Multiple myeloma

Secondary

Leukaemia