Ganglions

What is Ganglions?

Ganglions, also called ganglion cysts, are noncancerous (benign) lumps that form near joints or tendons. A tendon is the tough cord that connects muscle to bone. A ganglion is a small sac filled with a thick, clear, jelly-like fluid that is similar to the fluid that naturally lubricates joints. Most ganglions appear on the back of the wrist, but they can also develop on the palm side of the wrist, at the base of a finger, on the top of the foot, around the ankle, or near the knee.

Ganglions are among the most common soft-tissue lumps of the hand and wrist. They are seen most often in adults between their twenties and forties, and they tend to occur more frequently in women than in men. They can also develop in children and older adults, although this is less common. Ganglions are not cancer, they do not spread to other parts of the body, and in many cases they cause no symptoms other than a visible bump. In hospital settings such as Acibadem, ganglions are usually assessed by the Orthopedics & Joint Center, often together with hand surgery specialists.

Symptoms of ganglions

Ganglions symptoms are usually mild, and for many people the lump itself is the only sign. The most common features include:

• A round or oval lump under the skin, most often on the wrist, hand, or foot
• A lump that feels firm or slightly spongy and may move a little when pressed
• A lump that changes size, sometimes growing larger with activity and shrinking with rest
• Aching or discomfort around the lump, especially with repeated movement or pressure
• Tingling, numbness, or weakness if the cyst presses on a nearby nerve
• Reduced range of motion or a feeling of stiffness in the affected joint
• Pain when leaning on the wrist or wearing shoes that rub against a cyst on the foot

Ganglions can range from very small, sometimes too small to see, to lumps the size of a small grape or larger. Some people notice that the lump appears suddenly, while others watch it develop slowly over months. A cyst may also disappear on its own and then return later.

Symptoms often depend on where the ganglion is located. A cyst on the back of the wrist (a dorsal wrist ganglion) is usually painless but may ache when the wrist is bent fully. A cyst on the palm side of the wrist (a volar wrist ganglion) sits close to an artery and nerves and may cause more tenderness. Ganglions at the base of a finger, sometimes called flexor tendon sheath cysts, can feel like a small pea and may hurt when gripping. Cysts at the end joint of a finger near the nail, known as mucous cysts, are more common in older adults and may cause a groove in the fingernail. Very small “occult” ganglions cannot be seen but may still cause wrist pain that is hard to explain.

Causes and risk factors

The exact ganglions causes are not fully understood. The leading explanation is that the tissue lining a joint or tendon sheath weakens or is irritated, allowing joint fluid to leak out and collect in a pouch. The pouch is connected to the joint or tendon by a narrow stalk, which is why the cyst can fill and empty as fluid moves back and forth. Over time the fluid inside thickens into the jelly-like material that gives ganglions their characteristic feel.

Several factors appear to make ganglions more likely, although in many cases no clear trigger is found:

• Repetitive joint or tendon stress, such as activities that involve frequent wrist bending or gripping, may irritate the joint lining.
• Previous joint or tendon injury, including sprains, may weaken the tissues that hold joint fluid in place.
• Osteoarthritis, the “wear-and-tear” form of arthritis, is linked to mucous cysts at the finger joints closest to the nail.
• Age and sex: ganglions are most often seen in younger adults and occur more frequently in women.
• Joint laxity, meaning joints that are naturally looser than average, may play a role in some people.

Ganglions are not caused by an infection and cannot be spread from one person to another. They are also not linked to cancer. The old folk remedy of hitting a ganglion with a heavy book is not recommended, because it can damage surrounding tissue and the cyst frequently comes back.

Diagnosis of ganglions

Ganglions diagnosis usually begins with a physical examination. Your doctor will ask when you first noticed the lump, whether it has changed in size, and whether it causes pain, tingling, or weakness. During the exam, the doctor will press on the lump to check whether it is firm or soft, whether it moves, and whether it is tender. Because ganglions are filled with fluid, a doctor may shine a light through the lump. This test, called transillumination, causes a fluid-filled cyst to glow, whereas a solid growth blocks the light.

In many cases the diagnosis can be made from the history and examination alone. When there is uncertainty, or when the lump is in an unusual location, additional tests may be recommended:

• Ultrasound uses sound waves to create an image and can confirm that the lump is filled with fluid rather than solid tissue. It can also show whether the cyst lies close to an artery.
• X-rays do not show the cyst itself, but they can reveal arthritis or bone changes in the joint underneath.
• Magnetic resonance imaging (MRI), which uses magnets and radio waves to create detailed pictures, may be used for small hidden cysts or when another type of growth needs to be ruled out.
• Needle aspiration, in which a needle is used to draw fluid from the lump, can confirm the diagnosis because ganglion fluid has a distinctive clear, thick appearance. This may also relieve symptoms at the same time.

Other lumps can sometimes look like ganglions, including lipomas (fatty lumps), swollen tendon linings, bony growths, and, rarely, tumors. Imaging or aspiration helps your doctor distinguish between these possibilities. If a lump is solid, grows quickly, or does not behave like a typical cyst, your doctor may suggest a biopsy, in which a small sample of tissue is examined under a microscope.

Treatment options for ganglions

Ganglions treatment options range from simply watching the lump to surgical removal. The right approach depends on how much the cyst bothers you, where it is located, and whether it is affecting nerve function or joint movement. Because ganglions are harmless and often disappear on their own, treatment is not always necessary.

Observation

If a ganglion is painless and not interfering with daily activities, your doctor may recommend watchful waiting. A significant proportion of ganglions shrink or go away without any treatment, although this can take months or longer. During this time you may be asked to note any changes in size or new symptoms.

Activity changes and supports

Repeated movement can cause a cyst to grow and become more painful. Reducing the activities that aggravate the lump, or wearing a wrist splint or brace for a period, may allow the cyst to shrink and ease discomfort. Long-term splinting is generally not advised because it can weaken the surrounding muscles. Over-the-counter pain relievers, used according to the label or your doctor’s advice, may help with aching.

Aspiration

Aspiration is an office procedure in which the skin is numbed and a needle is used to drain the fluid from the cyst. Sometimes a corticosteroid, a type of anti-inflammatory medication, is injected afterward. Aspiration often provides quick relief, but because the stalk connecting the cyst to the joint remains, the ganglion frequently refills over time. Aspiration is used less often for cysts on the palm side of the wrist because of the nearby artery.

Surgery

Surgical removal, called excision, may be considered when a ganglion is painful, limits movement, presses on a nerve, or keeps returning after aspiration. The surgeon removes the cyst along with its stalk and a small portion of the joint capsule or tendon sheath from which it arises. This can be done through a small open incision or, for some wrist cysts, using arthroscopy, a technique that uses a thin camera and instruments inserted through tiny cuts. Surgery is usually performed as a day procedure under local or regional anesthesia. Ganglions can come back even after surgery, although recurrence is generally less common than after aspiration.

Recovery and rehabilitation

After surgery, the area is typically bandaged and the joint may be protected with a splint for a short time. Mild soreness, swelling, and stiffness are common for a few weeks. Most people gradually return to normal activities as comfort allows, and some benefit from simple exercises or hand therapy to restore full motion and strength. Your surgeon will advise you on when it is safe to resume specific activities.

Living with ganglions and outlook

For most people, the outlook with ganglions is good. The cysts are benign, they do not turn into cancer, and they do not cause lasting damage to the joint. Many ganglions remain small and painless for years, and some resolve without any intervention. When treatment is needed, aspiration or surgery relieves symptoms for many people, although no treatment can guarantee that a ganglion will never return.

If you choose to live with a ganglion rather than treat it, it can help to avoid activities that consistently make it larger or more painful, to protect the area from repeated pressure, and to monitor the lump for changes. Because these cysts can fluctuate in size, a lump that grows a little after heavy use and then shrinks with rest is usually not a cause for concern. Any lump that feels different, becomes hard, or grows steadily should be reviewed by a doctor.

Ganglions are usually managed by orthopedic surgeons or hand surgeons. At Acibadem, this care falls under the orthopedics service, which coordinates imaging, minor procedures, and surgery when they are needed.

Frequently asked questions

What is ganglions and are they dangerous?

Ganglions are benign, fluid-filled cysts that develop near joints or tendons, most often on the wrist or hand. They are not cancer, they do not spread, and they do not usually damage the joint. In some cases they can press on a nerve and cause tingling or weakness, or they can be painful with movement, but they are generally considered harmless.

What are the most common ganglions symptoms?

The most common symptom is a visible lump that may change size over time. Some people notice aching, especially during repetitive movement or when pressure is placed on the area. Less commonly, a cyst may press on a nerve and cause numbness, tingling, or weakness in the hand or foot. Many ganglions cause no symptoms at all.

What are the main ganglions causes?

The precise cause is not fully known. The most accepted explanation is that joint or tendon lining becomes irritated or weakened, allowing joint fluid to leak into a pouch that forms the cyst. Repetitive stress, prior injury, and arthritis in the underlying joint appear to increase the risk, but many ganglions develop without any identifiable trigger.

How is ganglions diagnosis confirmed?

Doctors often diagnose ganglions based on the location, feel, and history of the lump. Shining a light through the cyst can show that it contains fluid. When there is doubt, ultrasound or MRI may be used to confirm a fluid-filled cyst and rule out other growths, and an X-ray can check for arthritis in the joint. Drawing fluid out with a needle can also confirm the diagnosis.

What are the ganglions treatment options if the lump does not bother me?

If a ganglion is painless and not limiting your activities, your doctor may recommend no treatment other than observation. Many cysts shrink or disappear on their own over time. You may be advised to avoid activities that make the lump larger and to return for review if it becomes painful, grows quickly, or starts causing numbness or weakness.

Can ganglions come back after treatment?

Yes. Ganglions can recur after both aspiration and surgery. Recurrence is more common after aspiration because the stalk connecting the cyst to the joint usually remains in place. Surgery removes the stalk as well and tends to have a lower recurrence rate, but it does not guarantee that the cyst will never return.

Should I try to pop or hit a ganglion myself?

No. Attempting to burst a ganglion by striking it or puncturing it at home is not recommended. It can damage nearby tissue, cause infection or bleeding, and the cyst often refills anyway. If a ganglion is troublesome, it is safer to have it assessed and, if appropriate, drained or removed by a healthcare professional.

When to see a doctor

Most ganglions are harmless and can be reviewed at a routine appointment. However, any new lump should be evaluated by a doctor so that other conditions can be ruled out. Seek prompt medical attention if you notice any of the following:

• A lump that is growing quickly or has become hard and fixed in place
• Increasing pain that does not improve with rest
• Numbness, tingling, or weakness in the hand, fingers, foot, or toes
• Redness, warmth, or swelling around the lump, or fever, which may signal infection
• Skin over the lump that becomes thin, broken, or starts to drain fluid
• Changes in the color or temperature of the hand or fingers beyond the cyst
• A lump in an unusual location, or one that does not behave like a typical fluid-filled cyst

These signs do not necessarily mean something serious is happening, but they warrant assessment so that your doctor can confirm the diagnosis and discuss whether treatment is appropriate for you.