0:01

In considering intradural extramedullary processes,

0:05

the neoplastic category really predominates in the

0:09

pathology that we see on a day to day basis.

0:12

And those neoplasms that are in the intradural

0:15

extramedullary space are dominated by neurogenic tumors,

0:19

with schwannomas more common than neurofibromas

0:22

and the meningiomas. So, benign conditions.

0:26

There are a number of congenital

0:27

lesions that we discussed,

0:28

including cystic lesions, be it arachnoid cyst,

0:32

neurenteric cyst,

0:34

epidermoid cysts and dermoid cysts, as well as lesions

0:39

that contain fat, as in lipomas or fatty infiltration of

0:43

the filum or lipomeningoceles, or lipomyelomeningoceles.

0:48

Overall, with respect to the infectious etiologies,

0:52

this will be dominated by viral infections and they may

0:56

be manifested by polyneuropathies or polyradiculopathies.

1:01

The vascular malformations are pretty uncommon,

1:04

but what we see in the intradural extramedullary

1:07

space generally are enlarged veins.

1:10

As a manifestation of the most common of these,

1:13

the dural-based, arteriovenous fistula.

1:17

As I said,

1:18

we usually are dealing with benign conditions in the

1:20

intradural extramedullary space, as opposed to the

1:24

neoplasms that may occur in the spinal cord itself.

1:29

So I appreciate your attention,

1:31

and thank you once again.

Indradural Extramedullary Processes - Conclusion

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