Question 1

lumbar mri results. l4-l5 and l5-s1 references the mid sagitall dimension of thecal sac as 14 mm at each level.  is that a normal measurement?

Accepted Answer

Yes, that: is within the normal range.

Question 2

what would be the average thecal sac diameter for the lumbar area (l3-l4)? curious to know.... thank you.

Accepted Answer

Thecae sac: Normal should be 16-18mm and less than 15mm would be regarded as stenosis.

Question 3

is thecal sac impingement at l4-l5 the same as lumbar stenosis?

Accepted Answer

: Lumbar Stenosis refers generally to narrowing of the lumbosacral cistern at several levels.  An L4-5 "thecal sac impingement" refers to a solitary level disc protrusion or herniation, large enough to contact the thecal sac and perhaps deform the contours.

Question 4

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?

Accepted Answer

Disc Herniation: Thecal sac is the membrane that surrounds the spinal cord.  You need to see an orthopedic doctor or a spine specialist.

Question 5

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?

Accepted Answer

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

Question 6

x-ray rprt "loss of lumbar curvature",  mri rprt"l5-s1 disc show posterior central annulus protrusion causing subtle impingement on thecal sac" ?

Accepted Answer

Call your doctor: Your doctor who has the complete report and who has  examined   you can give you more information. You have a herniated disc which may be putting some pressure on the nerve.   Your doctor can give you more information and recommendation for treatment.

Question 7

mri report says -  1. straightened lumbar spine curvature 2. posterior central disc protrusion at l4 -l5 level  causing indentation of thecal sac

Accepted Answer

Herniation and spasm: One way to describe those findings is you have a herniated disc likely associated with spasm.  When paraspinal muscles go into spasm, the lumbar spine straightens out somewhat losing its normal contour.  I would not hesitate to be seen to discuss treaent options.

Question 8

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?

Accepted Answer

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.

Question 9

mri for lumbar pain, r leg and foot numbness .l4-l5 disc bulge noted; superimposed upon the bulge is a moderate sized broad herniation mildly asymmetric to the right with impingement on the right side of the thecal sac. what does this mean? thanks?

Accepted Answer

: It means your back pain and radiculopathic symptoms (leg pain and numbness) are caused by L4-5 herniated disc. Please follow with your doctor for further advice on treatment plan. Most of these cases are managed conservatively with success, without need of invasive intervention.

Question 10

i did mri lumbar spine found : moderate to severe stenosis of the thecal sac at l4/5 and l5/s1, multilevel lumbar facet degeneration most marked at the l4/5 ,sacroiliac joint degeneration change .what is the treatement to the above probleme ?

Accepted Answer

: If you are chronically symptomatic and problem has not improved with aggressive physical therapy +/- local therapy, you need to see a spine orthopedist for laminectomy or a minimal invasive spine surgery with vertiflex procedure for the described LS spine changes.

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Doctor answers about:

Normal lumbar thecal sac diameter

A member asked:

Lumbar mri results. l4-l5 and l5-s1 references the mid sagitall dimension of thecal sac as 14 mm at each level. is that a normal measurement?

A member asked:

What would be the average thecal sac diameter for the lumbar area (l3-l4)? curious to know.... thank you.

A member asked:

Is thecal sac impingement at l4-l5 the same as lumbar stenosis?

A member asked:

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?

A member asked:

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?

A member asked:

X-ray rprt "loss of lumbar curvature", mri rprt"l5-s1 disc show posterior central annulus protrusion causing subtle impingement on thecal sac" ?

A member asked:

Mri report says - 1. straightened lumbar spine curvature 2. posterior central disc protrusion at l4 -l5 level causing indentation of thecal sac

A member asked:

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?

A member asked:

Mri for lumbar pain, r leg and foot numbness .l4-l5 disc bulge noted; superimposed upon the bulge is a moderate sized broad herniation mildly asymmetric to the right with impingement on the right side of the thecal sac. what does this mean? thanks?

A member asked:

I did mri lumbar spine found : moderate to severe stenosis of the thecal sac at l4/5 and l5/s1, multilevel lumbar facet degeneration most marked at the l4/5 ,sacroiliac joint degeneration change .what is the treatement to the above probleme ?

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