indentation of the ventral thecal sac

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Dr. Milton Mintz answered:

What is foraminal narrowing and ventral thecal sac indentation? I also have osteoarthritis in my back alon with nerve pain in both legs

Spinal stenosis

Nerve
Possible cause. Arthritis underlying it- narrowing foramina means nerves leading down legs are being compressed &'irritated- sciatica should be followed by your pcp & orthopedist
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What is effacement of the ventral thecal sac?

Basically, it means

there is slight or minimal compression externally placed onto the outer covering of the spinal cord which can be from a variety of conditions usually not leading to any neurologic findings or even symptoms.
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Dr. Tariq Niazi answered:

What is the ventral thecal sac in the lower back??

Within the bony ---

Diskectomy
structures of the back, the Spinal Cord (SC), which is the continuation of the brain, lies. The SC is surrounded by a layer, called the Thecal sac. The front aspect of this is called the Ventral T Sac, while at the back, its the Dorsal (or Posterior) T Sac. Its present from the Neck down to the lower back. This sac contains the spinal fluid which bathes the SC, providing it nutrition.
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Dr. Edward Schmidt answered:

What does this mean on an MRI report C5-C6: There is a central disc protrusion indenting the ventral thecal sac?

A disc abuts spinal

Herniated_disk
In the neck at the C5-C6 level, the intervertebral disc protrudes posteriorly from the spine, and pushes upon the anterior aspect of the thecal sac that contains the spinal cord. This herniating disc material may abut or comress the spinal canal, possibly resulting with spasm.
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Dr. James Burns answered:

My MRI shows L4-5 mild broad-based disc bulge, which slightly indents the ventral thecal sac. Prominent facets. Please help!!!

That kind of

Mri
radiologic diagnosis can be attributed to thousands of MRI's and by itself means nothing. You must have had some symptoms before the MRI was done and those symptoms may or may not be related to the findings. Please relax and know that those findings are general and not specific for anything.
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Dr. Tariq Niazi answered:

Is the ventral dura and thecal sac the same thing?

Yes, for all pract--

ical purposes, its the same thing.
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Dr. Atif Haque answered:

Can i get approved for disability for herniated nucleus pulposus which indents the ventral aspect of the thecal sac?

No

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Ultimately this decision would rest with your doctor, but what you are describing many many people have. And many of them do nothave symptoms.
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Dr. Jason M. Boyer answered:

Female (55) C4 C5 osteophyte complex indents ventral thecal sac/lateral recess. disc protrusion contacts/flattens ventral hemicord ?

Not sure of your ?

C5
If you're asking about the imaging results you posted, you have a bone spur that is growing off of two of your vertebrae. It is large enough that it is pressing against your spinal cord and possibly some of the nerves that are exiting from the spinal cord. Your doctor will recommend treatment based on the severity of your symptoms.
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Dr. Martin Morell answered:

What does this mean? central disc protrusion at T7-8 causes effacement of anterior thecal sac. mild pressure on ventral aspect of thoracic cord.

The

Chest
herniation of the disc pushes the cover of the spinal cord but does not compress the cord itself.
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