A ganglion is a smooth, fluid filled lump that grows out of a joint lining or tendon sheath. It contains thick clear jelly. The back of the wrist is the classic site, followed by the palm side of the wrist, the base of a finger, the end joint of a finger (mucous cyst) and the top of the foot.
Ganglions are benign and never turn into cancer. About half disappear on their own within a few years, so treatment is optional and is chosen for pain, nerve pressure or appearance.
Symptoms
- A round, firm or rubbery lump that may change size with activity
- Aching after heavy use of the wrist, particularly when pushing up from a chair
- Tingling if the cyst presses on a nerve
- A pea sized tender lump at the base of a finger when gripping
- A groove in the fingernail from a cyst at the end joint
- Wrist pain without a visible lump, from a small hidden (occult) ganglion
Causes and risk factors
The exact cause is unknown. The leading explanation is that a small weak point in the joint capsule or tendon sheath lets joint fluid leak out through a one way valve, where it thickens into jelly inside a sac connected to the joint by a stalk. They are most frequent in women aged 20 to 40. Cysts at the end joint of a finger are different: they occur in older people and arise from an arthritic joint with a bone spur. Repetitive use does not clearly cause ganglions, though it can make an existing one ache.
How it is diagnosed
- Examination: Typical site and feel; light from a torch shines through the lump (transillumination).
- Ultrasound: Confirms a fluid filled cyst and separates it from solid lumps or an artery.
- MRI: For hidden ganglions or atypical lumps.
- X-ray: Shows arthritis beneath a finger mucous cyst.
Treatment options
- Reassurance and observation: Appropriate for painless lumps; many shrink or vanish.
- Aspiration: Drawing off the jelly with a needle under local anaesthetic; quick, but the cyst returns in about half of cases or more.
- Surgical excision: Removes the cyst with its stalk and a cuff of capsule, open or arthroscopically; recurrence falls to roughly 1 in 10.
- Mucous cyst excision with spur removal: For end joint cysts, sometimes with a small skin flap.
- Splinting: A short period of wrist rest can ease an aching flare.
When it is urgent
Ganglions are not emergencies. See a doctor promptly, locally, if a lump grows quickly, is hard and fixed, is hot and red, or if a finger cyst bursts and the joint becomes swollen and painful, which can indicate joint infection. Never hit a ganglion with a heavy object; it can fracture bones.
Travelling to Türkiye for treatment
Ganglion removal is a short day case operation under regional anaesthesia, and you can fly within a few days, so it fits a brief visit or can be combined with other planned care. It is a minor condition though, and travelling for it alone is seldom worthwhile. Stitches are removed at 10 to 14 days, which your local clinic can do.
Send your reports, scans and a short history and a Clinic-Y coordinator replies within 24 hours with suitable teams and written, all-inclusive proposals side by side. Reviewing your case is free.
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Can I just leave it?
Yes. If it does not hurt or bother you, leaving it alone is the safest option.
Will it come back after surgery?
In about 1 in 10 people, more often at the palm side of the wrist. Recurrence after needle aspiration is much more common.
Is the volar wrist ganglion more risky to remove?
It lies next to the radial artery, so surgery needs care and aspiration is usually avoided or done under ultrasound.