Source | Definition |
---|---|
Schajowicz and Lemos (1976) [15] | Malignant osteoblastoma |
Mirra and others (1976) [16] | Pseudomalignant osteoblastoma |
Revell and Scholtz (1979) [17] | Aggressive osteoblastoma |
Dorfman and Weiss (1984) [18] | Subclassification in: 1. low-grade osteoblastoma-like osteosarcomas 2. pseudomalignant osteoblastoma 3. malignant transformation of initially benign osteoblastoma to a high-grade malignant osteosarcoma 4. locally aggressive/ malignant osteoblastoma |
Bertoni and others (1985) [19] | Osteosarcoma resembling osteoblastoma |
Bertoni and others (1993) [20] | Osteoblastoma-like osteosarcoma |
Bertoni and others (1993) [21] | Osteoblastoma with cartilaginous matrix |
De Oliveira and others (2007) [22] | Atypical osteoblastoma |