Fibrocartilaginous mesenchymoma with low-grade malignancy.

In a review of cases of fibrous cartilaginous dysplasia of bone, five of fibrocartilaginous lesions were found to be different in clinical behavior and radiographic and morphologic features from the others. We have named these previously undescribed tumors "fibrocartilaginous mesenchymomas with low-grade malignancy in the fibrous elements."