Bone Pathology Database

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2nd image
Inter-operative X ray
Third image
AP Xray
The AP Xray shows a lytic lesion of the proximal humeral epipyseal region. The intraoperative xray shows it has a fairly well defined margin. Stippled calcification can be seen in the mass.

The diagnosis of chondroblastoma can usually be made by radiograph. when the age of the patient and location of the lesion are considered. The most common site for chondroblastoma is the epiphysis. 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. Cysts are present about 20% of the time and both MRI and CT can define the fluid levels. CT is also useful for defining the relationship of the tumor to the joint, integrity of the cortex, and intralesional calcifications. The differential diagnosis includes enchondroma, central chondrosarcoma and aneurysmal bone cyst.
Biopsy confirmed the diagnosis of chondroblastoma.

Treatment of this case Curettage, phenolisation, and autogenous bone graft.

Record 34