A superiorly migrated thecal sac indentation occurs when material—most often an intervertebral disc fragment—moves upward (toward the head) within the spinal ...

A migrated thecal sac indentation happens when part of an intervertebral disc (or other structure) pushes into and deforms the fluid-filled sac (the thecal ...

Distal” means farther from the center of the body; “extraforaminal” refers to the area just outside the bony opening (foramen) where nerve roots exit the ...

Proximal extraforaminal thecal sac indentation refers to a flattening or inward bending of the thecal sac—the tough, protective membrane (dura mater) that ...

Foraminal thecal sac indentation is a radiological finding on spine imaging, most often MRI, indicating that structures (such as a bulging disc, osteophyte, or ...

Posterolateral thecal sac indentation refers to a focal inward impression on the dural or “thecal” sac at its posterolateral (back-and-side) aspect within the ...

Posterior thecal sac indentation refers to a focal or diffuse inward pressing on the back (posterior) aspect of the thecal sac—the protective dural membrane ...

A parasagittal thecal sac indentation is a finding on spinal imaging—most often MRI—where the protective membrane around the spinal cord (the thecal sac) is ...

Central and both paracentral thecal sac indentation refers to MRI findings where the dural (thecal) sac— the protective membrane containing the spinal cord and ...

Paracentral thecal sac indentation is a focal deformation or inward pressure on the thecal sac— the dural sheath enclosing the spinal cord and cauda ...

Central Thecal Sac Indentation is a condition where structures inside the spine press on the back of the tube (thecal sac) that surrounds and protects the ...

Cervical thecal sac indentation at C7-T1 is a medical condition where the thecal sac, a protective membrane surrounding the spinal cord, is compressed or ...

Cervical thecal sac indentation at C6–C7 refers to a narrowing or flattening of the protective membrane (thecal sac) that surrounds the spinal cord and ...

The thecal sac is a fluid-filled membrane that encapsulates the spinal cord and the cauda equina (a bundle of nerve roots at the end of the spinal cord). It ...

Cervical thecal sac indentation at C4–C5 refers to a focal inward pressing of the thecal sac—the protective membrane (dural sac) that surrounds the spinal cord ...

Cervical thecal sac indentation at C3–C4 refers to a condition in which a structure—most commonly an intervertebral disc protrusion or osteophyte—presses ...

Cervical thecal sac indentation at C2–C3 is a finding often reported on cervical spine magnetic resonance imaging (MRI). It refers to pressure on the thecal ...

Cervical thecal sac indentation at the C1–C2 level refers to a radiologic finding in which the dural sac that encases the spinal cord is pushed inward or ...

Cervical thecal sac indentation occurs when structures—like a bulging disc or bone spur—press into the dural sac in the neck (cervical) portion of the spine, ...

Cervical Disc Free Fragment Sequestration is a serious form of intervertebral disc herniation in the neck, where a piece of the disc completely separates from ...