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Musculoskeletal Imaging
Emergency Imaging
PET Imaging
Pediatric Imaging
Training Collections
Musculoskeletal Imaging
Emergency Imaging
PET Imaging
Pediatric Imaging
Lesson
Intradural Extramedullary Lesions
42 topics, 2 hr. 16 min.
Introduction to Intradural Extramedullary Lesions
4 m.Standard MRI Pulse Sequences for Evaluating Spinal Lesions
3 m.Cystic Lumbar Schwanoma
4 m.Lumbar Spine Solid Schwanoma vs. Meningioma
3 m.Cervical Spine Plexiform Neurofibroma in a Patient with NF1
6 m.Intradural Extramedullary Lesion Differential Diagosis
3 m.Nerve Sheath Tumors of the Spine
5 m.Neurofibromatosis Type 2
4 m.Neurofibromatosis Type 1
4 m.Spinal Meningiomas
5 m.Thoracic Spine Meningioma
4 m.Calcified Meningioma
3 m.Cervical Spine Meningioma
4 m.Cervical Spine Meningioma, Atypical Location
4 m.Spinal Hemangioblastomas
3 m.Multiple Hemangioblastomas, Von Hippel Lindau
4 m.Myxopapillary Ependymoma
4 m.Spinal Paraganglioma
2 m.Differential Diagosis of Intradural Metastasis
10 m.Subarachnoid Seeding from Medulloblastoma
4 m.Subarachoid Seeding in a Breast Cancer Patient
3 m.Spinal Lymphoma
2 m.Congenital and Developmental IDEM Cysts
8 m.Neurenteric Cysts
4 m.Transdural Herniation of the Spinal Cord
3 m.Spinal Arachoid Cyst
3 m.Prominent Transdural Herniation of the Spinal Cord
2 m.Fat Containing Spine Lesions
4 m.Lumbar Spine Lipoma
2 m.Pediatric Lumbar Lipoma and a Congenital Malformation
3 m.Lipoma vs. Fatty Infiltration of the Filum
3 m.Congenital Dural Ectasia
3 m.Dural Ectasia
2 m.Dural Arteriovenous Fistula Type 1
4 m.Dural AVF vs. Normal Variation
5 m.Review of Dural AVF Types II, III, and IV
3 m.IDEM Infectious and Inflammatory Abormalities
6 m.Guillian Barre Syndrome
3 m.Chronic Inflammatory Demyelinating Polyradiculoneuropathy
3 m.CIDP Causing Cauda Equina Syndrome
3 m.CIDP Causing Brachial Plexopathy
3 m.Indradural Extramedullary Processes - Conclusion
2 m.0:01
This was a seven-month-old child who had spasticity
0:04
in the lower extremities, bilaterally.
0:06
We have the T1-weighted scan,
0:08
the STIR image and an axial T1-weighted scan.
0:12
As we look at the T1-weighted scan,
0:14
we see that we have a lesion that
0:16
is brightened signal intensity,
0:17
which is posterior to the spinal cord.
0:20
In what compartment is it located?
0:22
Well, we see that the CSF space is widened at the border
0:26
of the lesion and the spinal cord
0:28
is separate from the lesion.
0:29
And therefore we are in the intradural
0:32
extramedullary space.
0:34
The spinal cord is actually terminating
0:35
at an appropriate level,
0:37
so there is no tethering of the spinal cord.
0:40
And yet this lesion,
0:41
which is bright on T1 and suppresses on the
0:44
STIR image, is clearly containing fat,
0:46
and that's verified also on T1-weighted scan
0:50
without contrast, showing bright signal intensity.
0:52
On this scan, the spinal cord is being displaced anteriorly.
0:56
So this is an example of a lipoma in the
1:00
intradural extramedullary space without
1:03
associated spinal dysraphism.
Lumbar Spine Lipoma
HIDEInteractive Transcript
0:01
This was a seven-month-old child who had spasticity
0:04
in the lower extremities, bilaterally.
0:06
We have the T1-weighted scan,
0:08
the STIR image and an axial T1-weighted scan.
0:12
As we look at the T1-weighted scan,
0:14
we see that we have a lesion that
0:16
is brightened signal intensity,
0:17
which is posterior to the spinal cord.
0:20
In what compartment is it located?
0:22
Well, we see that the CSF space is widened at the border
0:26
of the lesion and the spinal cord
0:28
is separate from the lesion.
0:29
And therefore we are in the intradural
0:32
extramedullary space.
0:34
The spinal cord is actually terminating
0:35
at an appropriate level,
0:37
so there is no tethering of the spinal cord.
0:40
And yet this lesion,
0:41
which is bright on T1 and suppresses on the
0:44
STIR image, is clearly containing fat,
0:46
and that's verified also on T1-weighted scan
0:50
without contrast, showing bright signal intensity.
0:52
On this scan, the spinal cord is being displaced anteriorly.
0:56
So this is an example of a lipoma in the
1:00
intradural extramedullary space without
1:03
associated spinal dysraphism.
Report
Description
Faculty
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
Tags
Spine
Neuroradiology
Neoplastic
Musculoskeletal (MSK)
MRI
Acquired/Developmental
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