What Is a Ganglion Cyst?
A ganglion cyst is a fluid filled sac containing a jellylike fluid that originates from a tendon sheath or joint capsule. Ganglion cysts are a very common, benign soft-tissue mass. They most often occur on or around the wrist. However, they are also frequently found on the top or dorsum of the foot. Ganglion cysts may vary in size and they may resolve themselves over time.