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Practice-focused training programs designed to help you gain experience in a specific subspecialty area.
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Unlock access to our full Course Library and all self-paced Fellowships.
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Musculoskeletal Imaging
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For Training Programs
Supplement your training program with case-based learning for residents, registrars, fellows, and more.
For Private Practices
Upskill in high growth, advanced imaging areas.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
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
All right, my faithful watchers and listeners,
0:04
this is our quiz case.
0:05
So here we have a patient who has a known lymphoma.
0:10
We know that lymphoma is one of the diagnoses that
0:13
can lead to intradural intramedullary lesions.
0:18
intradural extramedullary lesions,
0:21
as well as extradural lesions.
0:23
So you can have it in the spinal cord,
0:24
you can have it seeding into the subarachnoid space
0:27
in the intradural extramedullary compartment,
0:29
and you may have it involving the bones or the soft
0:32
tissues outside the dura as extradural disease.
0:36
So this is a T1-weighted scan to the left
0:39
and a T2-weighted scan to the right.
0:41
Quiz time. Where's the lesion
0:45
as far as the space? In this case,
0:49
what we see is the mass here.
0:52
But as we look at the CSF space associated with it,
0:56
we see that it narrows rather than
1:00
widens at the junction with the mass.
1:04
Here, the CSF space is narrowing rather than widening.
1:10
So this is lymphoma,
1:12
but this is lymphoma in the extradural compartment,
1:16
not the intradural extramedullary compartment.
1:19
So, this is how we would analyze this case.
1:22
Lymphomas can be in any of the
1:24
different spaces,
1:25
but by virtue of the narrowing at the junction
1:28
with the tumor rather than widening.
1:31
This is an extradural lymphoma.
1:33
You might want to look at the signal
1:34
intensity of the spinal cord,
1:36
because although this is compressing
1:37
the spinal cord,
1:38
you don't see bright signal intensity
1:39
in the spinal cord.
1:40
This is a patient who we would not expect to
1:43
have a myelopathy associated with the mass.
1:47
And lymphoma is a type of tumor that will readily
1:50
respond to both radiation and chemotherapy
1:53
and may not require surgery.
Interactive Transcript
0:01
All right, my faithful watchers and listeners,
0:04
this is our quiz case.
0:05
So here we have a patient who has a known lymphoma.
0:10
We know that lymphoma is one of the diagnoses that
0:13
can lead to intradural intramedullary lesions.
0:18
intradural extramedullary lesions,
0:21
as well as extradural lesions.
0:23
So you can have it in the spinal cord,
0:24
you can have it seeding into the subarachnoid space
0:27
in the intradural extramedullary compartment,
0:29
and you may have it involving the bones or the soft
0:32
tissues outside the dura as extradural disease.
0:36
So this is a T1-weighted scan to the left
0:39
and a T2-weighted scan to the right.
0:41
Quiz time. Where's the lesion
0:45
as far as the space? In this case,
0:49
what we see is the mass here.
0:52
But as we look at the CSF space associated with it,
0:56
we see that it narrows rather than
1:00
widens at the junction with the mass.
1:04
Here, the CSF space is narrowing rather than widening.
1:10
So this is lymphoma,
1:12
but this is lymphoma in the extradural compartment,
1:16
not the intradural extramedullary compartment.
1:19
So, this is how we would analyze this case.
1:22
Lymphomas can be in any of the
1:24
different spaces,
1:25
but by virtue of the narrowing at the junction
1:28
with the tumor rather than widening.
1:31
This is an extradural lymphoma.
1:33
You might want to look at the signal
1:34
intensity of the spinal cord,
1:36
because although this is compressing
1:37
the spinal cord,
1:38
you don't see bright signal intensity
1:39
in the spinal cord.
1:40
This is a patient who we would not expect to
1:43
have a myelopathy associated with the mass.
1:47
And lymphoma is a type of tumor that will readily
1:50
respond to both radiation and chemotherapy
1:53
and may not require surgery.
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
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