Thecal sac

What does "Thecal 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.

Explanation

The term "thecal sac" refers to a protective covering that surrounds the spinal cord and contains fluid that helps to cushion the cord. When a medical report mentions the thecal sac, it's usually referring to this protective layer. In some cases, conditions or procedures can cause changes to the thecal sac, such as it being deformed or pressed upon, which can affect the spinal cord inside.

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