CHONDROSARCOMA CAUSING CERVICAL NEURAL FORAMEN WIDENING

Various neoplastic, vascular, and developmental causes may lead to spi nal neural foraminal widening, the most common causes of spinal dumbbe ll lesions being schwannomas and neurofibromas. Occasionally, some oth er slow-growing tumors may cause neural foraminal widening. We report an exceptional case of a low-grade spinal chondrosarcoma which apparen tly developed from a pre-existing osteochondroma in the neural arcus o f C6. The lesion passed through the C5-C6 foramen, producing a dumbbel l mass.