Atypical fibrous histiocytoma of the thoracic spine. Case report.

A 14-year-old boy presented with mid-thoracic pain, leg weakness, and bladder dysfunction. Plain x-ray films and bone scan were normal whereas myelography demonstrated an extradural mass extending from T-2 to T-5. Exploration revealed a large tumor adherent to dura and bone. Pathological verification of an atypical fibrous histiocytoma prompted the report of this rare tumor of the vertebral column.