A ganglion cyst is a tumor or swelling on top of a joint or the covering of a tendon. It appears as a sac of liquid, and the inside is a thick, sticky, clear, colourless, jelly-like material. The cysts may feel firm or spongy.
One large cyst or many smaller ones may develop. Multiple small cysts can give the appearance of more than one cyst, but a common stalk within the deeper tissue usually connects them. This type of cyst is not harmful and accounts for about half of all soft tissue tumors of the hand and foot.
Ganglion cysts, also known as Bible cysts, are more common in women. Approximately 70% occur in people between 20-40 years of age. Rarely do we see them in children younger than 10 years of age. 60-70% of Ganglion cysts are seen on the back of the hand, at the wrist joint and top of the foot