Pediatric Chondroblastoma

  • Etiology: benign cartilaginous neoplasm
  • Imaging:
    — Location: eccentric in epiphysis or in apophysis
    — Lytic or blastic: lytic with thin sclerotic rim with intralesional calcification in 50%
    — Matrix: chondroid
    — Zone of transition: narrow
    — Periosteal new bone or cortical destruction: periosteal new bone distant to lesion is distinctive amongst epiphyseal lesions
    — Additionally:

Radiology Cases of Chondroblastoma

Radiograph of chondroblastoma of humerus
AP radiograph of the right shoulder shows a lesion in the greater tuberosity of the humerus that is lytic in appearance with some internal calcification with a thin sclerotic rim and a narrow zone of transition and no periosteal reaction.