Table 5. Classification of TPs according to the stage of extended Enneking

Stage of Enneking Number (n=50) Ratio (%)
1: Benign, non-malignization 16 32
2: Benign, seldom malignization 3 6
3 A-B: Borderline malignant 8 16
I A-B: Low malignant 1 2
II A-B: High malignant, non-metastasis 1 2
III A-B: Malignant with metastasis 1 2
Carcinoma metastasis 14 28
Primary, none mesenchymal malignant 6 12