Ganglion Cyst

Ganglion cysts are fluid filled growths that most commonly develop on the hand.  They are filled with synovium, which is the same fluid than lubricates the joints and tendon sheaths.  They typically arise from joint or tendon sheaths.  Common locations include the dorsum (back) of the wrist, front of the thumb side of the wrist, at the base of the nail, and on the front of the finger near the web space.

Treatment generally involves excision if the cyst is bothersome or painful.  Drainage, steroid injection and smashing ganglion cysts generally results in recurrence.