osteochondroma

1.  Foreign Body Granuloma

Management

Curettage and bone graft (if bony)

Excision of lump 

- recurrence very unusual

2.  Osteochondroma

Xray

Cortical flow evident

3.  Brown's tumour

Causes

Primary hyperparathyroidism

Definition

Outgrowth of benign cartilage from bone

Epidemiology

50% of benign bone tumours

- single lesion in 90% 

Aetiology

1.  Multiple

Tumour suppressor gene

- family of tumour suppressor genes involved

- have been identified in chondrosarcomas

DDx

Primary

Benign

Osteoid Osteoma

Osteoblastoma

Osteochondroma

ABC

Hemangioma

Giant Cell tumour

EG

Malignant

Chordoma

Ewings

Osteosarcoma

Chondrosarcoma

Lymphoma

Multiple myeloma

Secondary

Leukaemia