Ganglion cysts are fluid-filled masses that typically form on the hand or wrist, caused by a buildup of joint fluid. They can also occasionally occur on other joints in the body, including the knees and ankles.
They are often discovered accidentally during physical activity or examination, but can sometimes become bothersome enough to seek treatment. These cysts are not life-threatening but they may impair hand function if large enough.
What is the cause of ganglion cysts?
The cause is unknown, but it may be due to repetitive trauma from sports use of the hand. There does not appear to be any genetic link with ganglion cyst development; however, there seems to be an association with Gardner’s syndrome (a hereditary disorder.)
What is a mucous cyst?
A mucous cyst is a small ganglion cyst that forms at the last joint in the fingers. It will often swell at the cuticle and can cause deformity of the nail These will often rupture and leak a slick, clear fluid. But they often form again after healing over.
How are ganglion cysts treated?
Treatment is often only necessary if the cyst is causing hand problems. These can include pain and loss of motion
Sometimes ganglion cysts respond to aspiration and injection that can be performed in the office. If that is not successful, surgery is an option. Surgical removal of the cyst is usually effective for the long term, but there is a small chance that they can grow back.
