What is a Ganglion cyst?
A ganglion cyst is a fluid-filled cystic lesion that forms from the lining of a joint or a tendon sheath. These are commonly seen in the wrists, ankles, and feet. Ganglions are benign and generally grow slow. These cystic lesions can become painful when they begin to apply pressure to adjacent structures like tendons, vessels, and nerves. Ganglions are typically treated by initially draining (aspirating) the fluid. However the reoccurrence rate is high and will then require surgical excision.