Epidural lipomatosis refers to excessive accumulation of fat within the epidural space, such that the thecal sac is compressed.
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 generalised 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
- 1. Selmi F, Davies KG, Sharma RR et-al. Idiopathic spinal extradural lipomatosis in a non-obese otherwise healthy man. Br J Neurosurg. 1994;8 (3): 355-8. Pubmed citation
- 2. Geers C, Lecouvet FE, Behets C et-al. Polygonal deformation of the dural sac in lumbar epidural lipomatosis: anatomic explanation by the presence of meningovertebral ligaments. AJNR Am J Neuroradiol. 2003;24 (7): 1276-82. Pubmed citation
- 3. Robertson SC, Traynelis VC, Follett KA et-al. Idiopathic spinal epidural lipomatosis. Neurosurgery. 1997;41 (1): 68-74. Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Spinal epidural lipomatosis||✗|
|Spinal epidural lipomatosis (SEDL)||✗|