Ganglion Procedures Ganglion Home/Procedures/Hand Procedures/Ganglion GanglionA ganglion cyst is a swelling that often appears on or around joints and tendons in the hand or foot.The size of the cyst can vary over time or with different joint positionIt is most frequently located around the wrist and on the fingers.Treatment :The problem is usually treated by aspiration of the cyst (removing of the fluid) or surgical excision