Health Encyclopedia - Diseases and Conditions

Ganglion Cysts

Definition of Ganglion Cysts

Ganglia are cystic swellings under the skin, generally in the wrist or the upper surface of the foot. A ganglion can develop on the top of the foot, on the front of the wrist, or in the fingers.

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Description of Ganglion Cysts

Usually rubbery to the touch, a ganglion may vary in size. Ganglia are often no bigger than peas. They may be soft or quite hard, and they are usually either painless or only somewhat bothersome.




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Causes and Risk Factors of Ganglion Cysts

A ganglion develops when a jelly-like substance accumulates in one of two places - a joint capsule or a tendon sheath - and causes it to balloon out. It results from an accumulation of the jelly-like substance that has leaked from a joint or tendon sheath.

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Symptoms of Ganglion Cysts

The usual sign is a lump on the wrist. Accompanying pain - especially when the wrist is extended or flexed - may be present, but usually the lump is painless.

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Diagnosis of Ganglion Cysts

Diagnosis is made on the basis of a physical examination and, in some cases, other tests or an x-ray will be needed to exclude other problems. An ultrasound is sometimes useful to confirm the diagnosis.

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Treatment of Ganglion Cysts

A ganglion is essentially harmless. However, if you observe a bump on your wrist or foot, seek your doctor's counsel to rule out other causes such as a malignancy.

If the ganglion is painful, the doctor may be able to relieve the discomfort through surgical or other means, but in most cases the small, harmless lump requires no treatment and has no effect on one's daily activities.

Surgical treatment involves bursting the ganglion simply by putting pressure on it after puncturing it in several places with a needle or draining the jelly-like contents with a needle. A surgical procedure is regarded as unnecessary in most cases, but if the ganglion is painful and does not respond to drainage, it can be removed surgically.

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What Questions To Ask Your Doctor About Ganglion Cysts

Do any tests need to be done to diagnose the ganglion cyst or to rule out other problems?

What causes these cysts?

What treatment, if any, do you recommend?

If surgery is recommended, what is the procedure? What anesthetic would be used?

Can these cysts change in their size or appearance?

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