Extradural spinal lipomas. Report of two cases and review of the literature.

The authors present two cases of extradural spinal lipomas causing spinal cord compression, not associated with spinal dysraphism. Sixty-nine cases of such tumours have been reported in the literature. It is important to distinguish between two histological types of these neoplasms: angiolipoma and true lipoma. They have a different distribution in relation to age and site of occurrence. The outcome can be quite variable considering the greater surgical problems that true lipomas can cause.