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Doctor insights on: What Is The Thecal Sac In The Spine

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Dr. Olav Jaren
Board Certified, Neurology
14 years in practice
2M people helped
1

1
MRI of my Cervical Spine There is disc degenerative changes with associated impingement of the thecal sac , exit neuroforaminal encroachment.

Dr. Olav Jaren
Board Certified, Neurology
14 years in practice
2M people helped


MRI of my Cervical Spine 
There is disc degenerative changes with associated impingement of the thecal sac , exit neuroforaminal encroachment.

MRI result?: So- what does this mean? It is common for MRI of the c-spine to show degenerative changes. Impingement of the thecal sac is not normally concerning. It is unclear what is meant by "exit neuroforaminal encroachment". Was there encroachment or not? If it is there, this normally means nerve root encroachment, which can cause symptoms that affect the arms. ...Read more

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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Bennett Machanic
Board Certified
47 years in practice
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Dr. Qamar Khan
Board Certified, Pain Management
12 years in practice
7M people helped
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I have 2 herniated disks and 5 buldges one of the hern's l2/3 is deforming the thecal sac, the report says lumbar spine straightening. What can I do?

Dr. Qamar Khan
Board Certified, Pain Management
12 years in practice
7M people helped
I have 2 herniated disks and 5 buldges one of the hern's l2/3 is deforming the thecal sac, the report says lumbar spine straightening. What can I do?

Sciatica: Pain in the distribution as you suggested describes the pattern of the nerve that travels in the leg called the sciatic nerve. The sciatic nerve is not the cause of the pain source, it is the result of an irritated nerve typically in the lumbar spine (low back) which are caused by herniated disks, spinal stenosis or degenerative disc disease requiring further evaluation by a spine specialist. ...Read more

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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Thomas Dowling
Board Certified, Orthopedic Spine Surgery
35 years in practice
15M people helped
3

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Please explain the significance of my recent MRI findings on my cervical spine. I have a history of spinal stenosis in the lower back. I recently had an MRI on my cervical spine showing significant to severe foraminal and thecal sac narrowing at multiple

Dr. Thomas Dowling
Board Certified, Orthopedic Spine Surgery
35 years in practice
15M people helped
Please explain the significance of my recent MRI findings on my cervical spine. I have a history of spinal stenosis in the lower back.  I recently had an MRI on my cervical spine showing significant to severe foraminal and thecal sac narrowing at multiple

About 20% of people: With lumbar spinal stenosis will have coexisting cervical spinal stenosis. Spinal stenosis is a narrowing of a bony canal structure such as the central spine canal or the exiting nerve holes known as neuroforamen which when severe enough by imaging studies will be deemed spinal stenosis. ...Read more

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Dr. Michael Bolesta
Board Certified, Orthopedic Surgery
35 years in practice
2M people helped
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If .7 CM enhancing lesion in thecal sac near L4 is discovered on pelvic mri, would you have lumbar spine MRI first and then go to mayo, or would you wait and have lumbar spine MRI at mayo?

Dr. Michael Bolesta
Board Certified, Orthopedic Surgery
35 years in practice
2M people helped
If .7 CM enhancing lesion in thecal sac near L4 is discovered on pelvic mri, would you have lumbar spine MRI first and then go to mayo, or would you wait and have lumbar spine MRI at mayo?

Ask them: Whether you go to mayo or another referral center (such problems are usually treated by neurosurgeons), each have there own preferences. Some like to review the study first, even before seeing you (so you could have the lumbar mri, with and without contrast in your community). Others like the study done at their site so they can specify the MRI sequences they desire. ...Read more

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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Shadi Azar
Board Certified, Radiology
17 years in practice
22K people helped
5

5
I got my lumbar spine MRI which says, L4-5, Disk bulge is noted impinging on the anterior thecal sac near the exiting nerve roots. There is mild face?

Dr. Shadi Azar
Board Certified, Radiology
17 years in practice
22K people helped
I got my lumbar spine MRI which says, L4-5, Disk bulge is noted impinging on the anterior thecal sac near the exiting nerve roots.  There is mild face?

Mild Facet joint : I think you meant to type (Facet Joint ) not Face. Lumbar MRI evaluate the facet joints and can show degenerative changes ( fluid in joint, or hyper trophy which is enlargement ) and these changes can narrow the spinal canal and / or neural foramen narrowing ( where nerve exit the spine. ...Read more

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Dr. Walter Husar
Board Certified, Neurology
28 years in practice
4M people helped
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Can your tell if a tumor in the thecal sac at l-4 is a paraganglioma versus a peripheral nerve sheath tumor by lumbar spine MRI alone?

Dr. Walter Husar
Board Certified, Neurology
28 years in practice
4M people helped
Can your tell if a tumor in the thecal sac at l-4 is a paraganglioma versus a peripheral nerve sheath tumor by lumbar spine MRI alone?

Not by imaging alone: There is no definitive way to determine pathological type tumor by neuroimaging alone. ...Read more

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Dr. Moshe Lewis
Board Certified, Physical Medicine and Rehabilitation
20 years in practice
2M people helped
7

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MRI cervical spine showed 2 central disc herniations, a bulge, 2 uncovertebral joint hypertophy into thecal sac. How long until i heal, i am doing PT.

Dr. Moshe Lewis
Board Certified, Physical Medicine and Rehabilitation
20 years in practice
2M people helped
MRI cervical spine showed 2 central disc herniations, a bulge, 2 uncovertebral joint hypertophy into thecal sac. How long until i heal, i am doing PT.

Can take 1- 2 years: MRI's of the cervical spine show the current state of the the spinal elements as they change over time.Several of those changes such as uncovertebral joint hypertrophy are a response to gravity and changes in the disc.The disc herniations will do their best to heal slowly over time, however they are due to aging and degeneration with water loss.In the meantime continue PT and regular f/u w/your MD ...Read more

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Dr. Peter Ihle
Board Certified, Orthopedic Surgery
49 years in practice
6M people helped
8

8
If you have a 1cm lesion in thecal sac of lumbar area with urinary ret and bowel dysmotility that improves with large doses (1200mg) of ibuprofen, could ibuprofen be reducing inflammation in spine?

Dr. Peter Ihle
Board Certified, Orthopedic Surgery
49 years in practice
6M people helped
If you have a 1cm lesion in thecal sac of lumbar area with urinary ret and bowel dysmotility that improves with large doses (1200mg) of ibuprofen, could ibuprofen be reducing inflammation in spine?

Yes but: It is not a solution 4 the long term . C a spine surgeon, these r significant symptoms. If due 2 a disk, surgery. If due 2 a growth, removal & get a firm DX as 2 malignant or benign. ...Read more

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Dr. Michael Gabor
Board Certified, Diagnostic Radiology
28 years in practice
8M people helped
9

9
MRI cervical spine shows mild narrowing thecal sac at c5-c6, minimal bulge with joint hypertrophy. What does that mean?

Dr. Michael Gabor
Board Certified, Diagnostic Radiology
28 years in practice
8M people helped
MRI cervical spine shows mild narrowing thecal sac at c5-c6, minimal bulge with joint hypertrophy. What does that mean?

Basically: mild degenerative changes or arthritis of the disc and the facet joints. ...Read more

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Dr. Walter Husar
Board Certified, Neurology
28 years in practice
4M people helped
10

10
As to nerve sheath tumors in thecal sac at l-4, in your experience do they typically grow or do they usually remain stable in size?

Dr. Walter Husar
Board Certified, Neurology
28 years in practice
4M people helped
As to nerve sheath tumors in thecal sac at l-4, in your experience do they typically grow or do they usually remain stable in size?

Different speed: All tumors will grow, benign rumors grow very slowly and malignant tutors grow much quicker. Nerve sheath rumors are usually benign. Best to discuss this with your doctor. ...Read more

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Dr. Bennett Machanic
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