Malignant Progression in Two Children with Multiple Osteochondromas
(a) Axial MRI images of the iliac mass reveal its enlarged cartilage cap of 5-6 cm thickness and the nodular or ring and arc enhancement (large arrow). (b) Coronal MRI images reveal the enlarged cartilage cap, nodular or ring and arc enhancement (large arrow), and invasion of the inner table cortex by tumor (small arrow).
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