Longitudinally extensive spinal cord lesion

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Longitudinally extensive spinal cord lesions (LESCL) (also known as longitudinal extensive transverse myelitis (LETM)) represent extensive invovlement of the spinal cord, with abnormal T2 signal extended at least 3 vertebral body segments in legth ¹. They are typical of neuromyelitis optica (NMO) but can be seen in a number of other conditions, including ^1-3:

neuromyelitis optica (NMO)
~~multiple sclerosis~~
- opticospinal form of Asian MS (OSMS)
multiple sclerosis
- confluent short segment lesions mimicking LESCL
systemic illness
other causes of transverse myelitis
- idiopathic (aquaporin 4 negative)
- post infectious
vascular
- spinal cord infarction
- dural arteriovenous fistula (dAVF)

~~-<li><a href="/articles/neuromyelitis-optica">neuromyelitis optica (NMO)</a></li>~~
~~-<a href="/articles/multiple-sclerosis">multiple sclerosis</a><ul>~~
~~-<li><a href="/articles/opticospinal-form-of-asian-ms-osms">opticospinal form of Asian MS (OSMS)</a></li>~~
~~-<li>confluent short segment lesions mimicking LESCL</li>~~
~~-</ul>~~
+<a href="/articles/neuromyelitis-optica">neuromyelitis optica (NMO)</a><ul><li><a href="/articles/opticospinal-form-of-asian-ms-osms">opticospinal form of Asian MS (OSMS)</a></li></ul>
+</li>
+<li>
+<a href="/articles/multiple-sclerosis">multiple sclerosis</a><ul><li>confluent short segment lesions mimicking LESCL</li></ul>

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Longitudinally extensive spinal cord lesion

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