Plastic and Hand Surgery of North Texas

Ganglion Cysts

A ganglion cyst is a tumor or swelling on top of a joint or the covering of a tendon (tissue that connects muscle to bone). It looks like a sac of liquid. Inside the cyst is a thick, sticky, clear, colorless, jellylike material. Depending on the size, cysts may feel firm or spongy. This type of cyst is not harmful and accounts for about half of all soft tissue tumors of the hand. Ganglion cysts most commonly occur on the back of the hand (60%-70%), at the wrist joint, and can also develop on the palm side of the wrist.