Benign neoplasm of cartilaginous origin composed primarily of myxoid cartilage
Previously thought to be Chondrosarcoma
Very rare tumour
- young adults 10-30
- M:F 2:1
Common upper tibia
- metaphysis of long bones
- lower limb predilection
Tenderness
Rare low-grade malignant tumour
- cell of origin unknown
Usually second or third decade of life
90% diaphysis of tibia
Mandible
Most common anterior cortex of tibia
Heterogeneous group of diseases characterised by
- hyperuricaemia
- recurrent attacks of acute arthritis
Diagnosis confirmed by
- crystals of Monosodium Urate in synovial fluid
- tophi ("Porous stone") urate in soft tissues
- renal urate stones
Adult men