Medical Health Encyclopedia

Carpal tunnel biopsy

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Carpal tunnel syndrome Surface anatomy - normal palm Surface anatomy - normal wrist Carpal biopsy

Overview Risks Results

Carpal tunnel biopsy

Definition:

Carpal tunnel biopsy is a diagnostic procedure in which a small portion of tissue is removed from the carpal tunnel (part of the wrist).

Alternative Names:
Biopsy - carpal tunnel

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How the test is performed:

The skin of your wrist is scrubbed and injected with a local anesthetic, which numbs the area. Through a small incision, a sample of tissue is removed from the carpal tunnel (by direct removal of tissue or needle aspiration).

Sometimes this procedure is performed at the time of carpal tunnel release.

How to prepare for the test:

Fasting may be advised for a few hours before the test.

For infants and children, the physical and psychological preparation you can provide for this test depends on your child's age and experience. For specific information regarding how you can prepare your child, see the following topics:

• infant test or procedure preparation (birth to 1 year)
• toddler test or procedure preparation (1 to 3 years)
• preschooler test or procedure preparation (3 to 6 years)
• schoolage test or procedure preparation (6 to 12 years)
• adolescent test or procedure preparation (12 to 18 years)

How the test will feel:

You may feel some stinging or burning when the local anesthetic is injected. You may also feel some pressure or tugging during the procedure. Afterward, the area may be tender or sore for a few days.

Why the test is performed:

This test may be performed when the diagnosis of amyloidosis is suspected in a patient with symptoms consistent with carpal tunnel syndrome.

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