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Chordoma is a rare tumour. Gentil and Coley (1948) could only find nine cases of chordoma in 31, 099 cases of cancer, seen over a period of 13 years at the Memorial Hospital, New York. Over 50 percent of the chordomas originate in the sacrococcygeal region; about a third develop at the base of the skull and only about 10 percent arise from the vertebrae (Ashley 1978). Vertebral chordomas commonly occur in the cervical and lumbar spine. Chordoma of the thoracic spine is extremely uncommon (Husain 1960).