Abstract
We examined eight patients with primary spinal epidural non-Hodgkin's lymphoma presenting with spinal cord compression and proven histologically after laminectomy (7 cases) or biopsy (1 case) by MRI. The most common findings were an isointense or low signal relative to the spinal cord on T1-weighted images (T1WI) and high signal on T2-weighted images (T2WI). Spinal cord compression, vertebral bone marrow and paravertebral extension were assessed. Contrast enhancement was intense in seven of the eight cases and homogeneous in all of them. T2WI (performed in 2 cases) may be useful to distinguish metastatic carcinomas and sarcomas. T1WI demonstrated the full extent of the epidural lesion, which was well-delineated in all cases. When the paravertebral extension is not well-defined, a study with contrast medium should be performed.
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