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Ganglion cysts generally are:

• Raised lumps near your wrist or finger joints
• Round, firm and smooth
• Fluid-filled, as evidenced by shining a light through the cyst (transillumination)
• Variable in size depending on your activity level, becoming larger when you use the affected joint and growing smaller when you're at rest
• Painless, although in some cases the cysts may put pressure on the nerves near the joint, which can cause pain, weakness or numbness.

In some cases, the telltale lump that usually indicates a ganglion cyst isn't visible. Often the only indication of these smaller, "hidden" ganglion cysts (occult ganglions) is pain. These occult cysts can be seen only with ultrasound or MRI.

When to see a doctor
If you experience a noticeable lump or pain in your wrist, hand or foot, see your doctor. He or she can make a diagnosis and determine whether you need treatment.

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It's not clear what causes a ganglion cyst to develop. It grows out of a joint, similar to a balloon on a stalk, and seems to occur when the tissue that surrounds a joint or a tendon bulges out of place. Inside the cyst is a thick fluid similar to that found in joints or around tendons.

©1998-2012 Mayo Foundation for Medical Education and Research (MFMER). Terms of use.
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Ganglion cysts are more common in women.

The following factors also may put you at a greater risk of forming ganglion cysts:

• Having osteoarthritis, the wear-and-tear type of arthritis. Osteoarthritis can increase fluid within the joints, which can then leak into the tendon sheath and accumulate in an existing cyst.
• Injury to the joints or tendons of your hands or feet.

©1998-2012 Mayo Foundation for Medical Education and Research (MFMER). Terms of use.
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You're likely to start by seeing your primary care doctor, although he or she may eventually refer you to a surgeon.

To get the most out of your appointment, it's a good idea to prepare for it. Here's some information to help you get ready for your appointment, and what to expect from your doctor.

What you can do

• Write down any symptoms you're experiencing, including any that may seem unrelated to the reason for which you scheduled the appointment.
• Write down key personal information, including your medical conditions, recent injuries and jobs or hobbies that might put stress on your affected hand or foot.
• Make a list of all medications, vitamins or supplements that you're taking.
• Write down questions to ask your doctor.

List your questions from most important to least important in case time runs out. Some basic questions you might want to ask your doctor include:

• What is likely causing my symptoms or condition?
• Other than the most likely cause, what are other possible causes for my symptoms or condition? (Although there's no clear cause for ganglion cysts, there may be factors that contribute to them, such as osteoarthritis, overuse of the affected area or injury to it.)
• Do I need any tests?
• Is my problem temporary or chronic?
• What is the best course of action?
• What are the alternatives to the primary approach that you're suggesting?
• I have other health conditions. How can I best manage them while taking care of this new problem?
• Are there any restrictions that I need to follow?
• Should I see a specialist? What will that cost, and will my insurance cover seeing a specialist? (You may need to call your insurance provider yourself to get some of these answers.)
• Are there any brochures or other printed material that I can take home with me? Do you recommend visiting websites?

In addition to the questions that you've prepared to ask your doctor, don't hesitate to ask questions during your appointment at any time.

What to expect from your doctor
Your doctor is likely to ask you a number of questions. If you're ready with the answers, you and your doctor may have more time to discuss your particular questions and concerns. Your doctor may ask:

• When did you first notice the lump?
• Do you have any pain or tenderness?
• Is it interfering with your ability to use your joint?
• What, if anything, seems to improve your symptoms?
• What, if anything, appears to worsen your symptoms?

What you can do in the meantime
If you experience worsening of symptoms with certain activities — for example, repetitive hand movements — you might want to minimize or avoid such actions, if possible. To relieve pain, consider an over-the-counter pain reliever, such as acetaminophen (Tylenol, others) or ibuprofen (Advil, Motrin, others).

©1998-2012 Mayo Foundation for Medical Education and Research (MFMER). Terms of use.
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If your doctor suspects a ganglion cyst, these are some tests he or she may perform:

• Physical exam. Your doctor may apply pressure to the cyst to test for tenderness or discomfort.
• X-ray. Your doctor may also recommend an X-ray of the affected area to rule out other conditions, such as arthritis or a tumor.
• Aspiration. A ganglion cyst diagnosis may be confirmed by aspiration, a process in which your doctor uses a needle and syringe to draw out (aspirate) the fluid in the cyst. Fluid from a ganglion cyst will be thick and clear or translucent.
• Other imaging tests. Your doctor may recommend ultrasound or magnetic resonance imaging (MRI) to gain information on the cyst's size, shape and depth. MRI or ultrasound may also be used if your doctor suspects a ganglion cyst, but the telltale swelling isn't visible in a physical exam. In this case, an MRI or ultrasound can help locate and diagnose the "hidden" ganglion cyst (occult ganglion).

©1998-2012 Mayo Foundation for Medical Education and Research (MFMER). Terms of use.
Read this article on Mayoclinic.com.

Ganglion cysts are often harmless and painless, requiring no treatment. In fact, in many cases, doctors recommend a watch-and-wait approach before exploring treatment options.

However, if the ganglion cyst is causing pain or it's interfering with joint movement, your doctor may recommend one of several treatment options.

Immobilization
Because activity can make the ganglion cyst grow larger,  your doctor may recommend wearing a wrist brace or splint to immobilize the area. This helps your hand and wrist to rest, which may help shrink the cyst. As the cyst shrinks, it may release the pressure on your nerves, relieving pain.

Aspiration
In aspiration, your doctor drains the fluid from the cyst. To do so, your doctor applies a local anesthetic to the area above the cyst. Then, he or she punctures the cyst with a needle and removes the fluid from the base of the cyst with a syringe. Your doctor may recommend a steroid injection into the empty cyst after aspiration. This procedure can be done right in your doctor's office.

After aspiration, as many as 60 percent of ganglion cysts may recur. If the cyst recurs, aspiration can be repeated. However, in some cases your doctor may recommend surgery to remove the cyst.

Surgery
If you have significant pain or difficulty with joint movement, or if other treatments aren't working, your doctor may recommend surgery to remove the ganglion cyst.

In most cases, doctors perform the surgery on an outpatient basis, which means you'll go home the same day as the operation.

During surgery

• Typically, a local or regional anesthetic is used to numb the affected area.
• The surgeon then makes an incision in the skin overlying the ganglion cyst. The size of the incision depends on the size of the cyst.
• The surgeon removes the cyst and the stalk that attaches it to the joint or tendon, along with a small portion of the surrounding tissue in most cases.
• Then the surgeon will stitch and bandage the affected area.

After surgery

• Keep the affected limb elevated for up to 48 hours to help reduce swelling. You may experience discomfort, swelling and tenderness for two to six weeks.
• Your doctor may recommend analgesics, such as acetaminophen (Tylenol, others), or nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen (Advil, Motrin, others) or naproxen (Aleve, Naprosyn, others), for pain relief.
• Change your bandages (dressings) as directed.
• Depending on the location of the cyst, your doctor may recommend temporarily wearing a splint or brace to help minimize postoperative pain. In most cases, however, moving the affected area soon after surgery is recommended.
• As the incision heals, it's important to watch for signs of infection, including redness, swelling or discharge.
• Usually, physical therapy is not necessary after ganglion cyst removal. But if you have new problems with joint stiffness, therapy may help you regain strength in your hand, wrist or foot.

Unfortunately, there's no guarantee that a ganglion cyst won't recur, even after surgery. And as with all surgeries, there are risks to be considered. Though rare, injury to nerves, blood vessels or tendons may occur. These could result in weakness, numbness or restricted motion. Your doctor can help you decide the best treatment for you.

©1998-2012 Mayo Foundation for Medical Education and Research (MFMER). Terms of use.
Read this article on Mayoclinic.com.

To relieve discomfort around the ganglion cyst area, refrain from activities that seem to worsen the pain.

An old home remedy for a ganglion cyst consisted of "thumping" the cyst with a heavy object. This isn't a good solution because it hurts and can damage surrounding structures in your hand or foot. Also, don't try to "pop" the cyst by puncturing it with a needle or sharp object. This is unlikely to be effective and can lead to infection.

©1998-2012 Mayo Foundation for Medical Education and Research (MFMER). Terms of use.
Read this article on Mayoclinic.com.