Patients may present with back pain resembling that of a disc herniation. In severe cases, symptoms of canal stenosis are produced.
Characterized by the abnormal accumulation of unencapsulated adipose tissue in the extradural space.
Typically involves the lower lumbar and/or lower thoracic levels.
There is a often generalized excess of fat seen in the extradural space. As a result the dural sac can appear narrowed or even resemble a "Y" shaped configuration.
Signal characteristics follow fat on all sequences:
- T1: high signal
- T1 (FS): shows fat suppression
- T2: high signal