Fig. 4From: Spinal epidural lipomatosis presenting to a U.S. Veterans Affairs pain and rehabilitation department: a report of two casescase 2, epidural fat measurement pre LESI, demonstrating a grade 0, or normal finding. “A” demonstrates the spinal canal, “B” demonstrates the dural sac, and EF is the difference between these measurements. The L4–5 disc herniation is not visualized on this imageBack to article page