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A muscle biopsy is the removal of a small piece of muscle tissue for examination.
Alternative NamesBiopsy - muscle
How the test is performedThis procedure is usually done while you are awake. The health care provider will apply a numbing medicine (local anesthesia) to the biopsy area.
There are two types of muscle biopsy:
A needle biopsy involves inserting a needle into the muscle. When the needle is removed, a small piece of tissue remains in the needle. The tissue is sent to a laboratory for examination. More than one needle stick may be needed to get a large enough sample.
An open biopsy involves making a small cut in the skin and into the muscle. The muscle tissue is then removed.
How to prepare for the testNo special preparation is usually needed.
How the test will feelDuring the biopsy, there is usually minimal or no discomfort. You may feel some pressure or "tugging" sensations.
The anesthetic may burn or sting when injected (before the area becomes numb). After the anesthetic wears off, the area may be sore for about a week.
Why the test is performedA muscle biopsy may be done to identify or detect:
- Diseases of the connective tissue and blood vessels (such as polyarteritis nodosa)
- Infections that affect the muscles (such as trichinosis or toxoplasmosis)
- Muscular disorders such as muscular dystrophy or congenital myopathy
- Metabolic defects of the muscle
A muscle biopsy may be also be done to tell the difference between nerve and muscle disorders.
A muscle that has recently been injured, such as by an EMG needle, or is affected by a pre-existing condition, such as nerve compression, is not a good choice for a biopsy.
Normal ValuesA normal result means there is normal muscle and related tissue anatomy. There are no abnormalities seen when the tissue sample is stained and examined under a microscope.
What abnormal results meanA muscle biopsy can help diagnose the following conditions:
- Atrophy (loss of muscle mass)
- Dermatomyositis
- Duchenne muscular dystrophy
- Inflammation of the muscle
- Muscular dystrophy
- Myopathic changes (destruction of the muscle)
- Necrosis(tissue death) of muscle
- Necrotizing vasculitis
- Traumatic muscle damage
- Polymyositis
Additional conditions under which the test may be performed include:
- Becker's muscular dystrophy
- Charcot-Marie-Tooth disease (hereditary)
- Common peroneal nerve dysfunction
- Eosinophilic fasciitis
- Facioscapulohumeral muscular dystrophy (Landouzy-Dejerine)
- Familial periodic paralysis
- Friedreich's ataxia
- Polymyalgia rheumatica
- Senile cardiac amyloid
- Thyrotoxic periodic paralysis
The risks are small, but may include:
- Bleeding
- Bruising
- Damage to the muscle tissue or other tissues in the area (very rare)
- Infection (a slight risk any time the skin is broken)
Review Date: 09/16/2010
Dennis Ogiela, MD, Orthopedic Surgeon, Danbury Hospital, Danbury, CT. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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What is the singular for biopsy?
Biopsy.
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biopsies
What is the icd-9 code for a muscle biopsy?
icd9 code for muscle biopsy
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CPT Code - biopsy, deep muscle: 20205
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What does muscle biopsy typically indicate about inflammatory myopathies a subtype of myopathy?
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Is the process in which a small piece of muscle tissue is excised and then stained for microscopic examination?
muscle biopsy
How do electrical tests diagnose periodic paralysis?
Electrical tests of muscle and a muscle biopsy show characteristic changes.
What is the medical term meaning surgical removal of a muscle?
I think it is Biopsy ~ Biopsy (bi = life + ops = see + y = procedure) is removing a sample of tissue for examination. To connect the term to a muscle, you would generally identify the specific muscle. Ex: The doctor submitted the Biceps brachii biopsy for outside evaluation.
What is the cpt code for biospy of paraspinal mass?
20206 - Percutaneous needle biopsy of muscle
