What does "Dural sac" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
The "dural sac" is a protective covering around the spinal cord. It's like a tough, flexible tube that contains and protects the delicate nerves of the spinal cord. When something is said to be "impinging upon the dural sac", it means that it's pressing or pushing on this protective tube.
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