Periosteal Chondroma

 

Definition

 

Rare benign chondrogenic tumour on the surface of the bone

 

Epidemiology

 

10 - 20 years

 

Most common in the proximal humerus

- proximal femur

- distal femur

 

Xray

 

Shallow cortical defect on the surface of long bones

 

Periosteal chondromaXray periosteal chondroma

 

CT

 

CT periosteal chondromaCT periosteal chondroma

 

MRI

 

MR periosteal chondromaMR periosteal chondroma

 

DDx

 

Juxta-cortical chondrosarcoma

Periosteal / parosteal osteosarcoma

Osteochondroma

 

Histology

 

Biopsy periosteal chondroma

 

DDx Chondrosarcoma

 

Bland hyaline cartilage

 

Management

 

Marginal excision +/- reconstruction

 

Periosteal chondroma surgery 1Periosteal chondroma 2