Text in Italics is general (instructional) information
Detailed view at 1 yr
These pelvic Xrays show the lesion in a healing stage.
The lesion healed leaving no sequelae except a 1 cm overgrowth of the greater trochanter.
The Chondroblastoma occurs in the epiphyseal region and shows puntate calcifications on Xray.
The most common site of the chondroblastoma is the distal femur followed by the proximal femur as in this case, proximal humerus and proximal tibia. The greater trochanter is near the apophysis of the abductor attachment (functionally an epiphysis) and is also a common site for this tumour. The tumor has a preference for males over females and the mean age of presentation is approximately 20 years old. The lesion is lytic with well defined margins and can be from 1-6cm in size. Scalloping or expansion of cortical bone may be present. Fine calcifications, either punctate or in rings, may be visible