A cyst is a sac-like structure that is often filled with fluid, or some other substance. There are many types of cysts such as epidermoid cysts, pilar cysts and Baker’s cysts. One type of cyst that is commonly found in the wrist or hand is the ganglion cyst.
Ganglion cysts form near joints or tendons. They appear as a round lump under the skin. They can be as small as a pea or as large as a golf ball. The exact cause of ganglion cysts are unknown but one theory is that ganglion cysts develop when the tissue that covers a tendon or joint is torn. The tissue then bulges as it fills with synovial fluid.
There are some risk factors for developing ganglion cysts. For example, ganglion cysts are more likely to occur in females between 20 and 50 years old. They are also more common in those with arthritis or those who have had a joint or tendon injury.
Ganglion cysts are not cancerous and are generally considered harmless. However, ganglion cysts can be painful, especially when pressed on. The cysts can go away by themselves with time. Alternatively, a doctor can treat the cyst by either draining the fluid or excising the cyst.
Check out Complete Anatomy to learn more about the anatomy affected by ganglion cysts!
