Spinal epidural lymphomas: CT features in seven patients.

The computed tomographic (CT) images and records of seven patients with epidural lymphomas were reviewed to analyze their CT characteristics. Although no single specific pattern was identified, several signs were seen: (1) an intraspinal epidural irregular mass extending over several vertebral levels; (2) a mass with osteolysis or sclerosis; and (3) a combined intra- and extraspinal mass. Lymphoma must be considered in epidural masses when there are associated bone changes.