OBJECTIVE
To investigate the biological behavior of classical and atypical osteoblastomas in comparison to osteosarcomas.
METHODS
Based on histological parameters, 30 osteoblastomas were subclassified as classical osteoblastomas (23/30) or atypical osteoblastoma (high cellularity, prominent blue osteoid, and epithelioid osteoblasts--7/30). Comparative immunohistochemical and clinical analysis...
