A ganglion cyst is the formation of a fluid filled sack that usually appears around the tendon sheets and joints. It usually feels spongy when pressed and, in most cases, contains a thick, sticky, jellylike substance. Formation of ganglion cysts can be contributed to a
trauma or to a flaw in the tendon joint sheet allowing the tissue to bulge out. It is more common in people who have pronounced deformities (hammertoes, claw toes, and joint deformities) since they are prone to constant irritation and repetitive motions.
Treatment will vary depending on the location of the cyst and presence or absence of pain. A physical exam is needed and, in some cases, ultrasound is required to confirm the presence of a
ganglion cyst and to determine the size, shape and depth of the cyst. There are a few treatment options available ranging from immobilization and compression to simple aspiration of the cyst. In
some cases, infiltration of the cyst with anti-inflammatory medication is enough to completely shrink the cyst. Difficult cysts that do not respond to initial treatments may have to be surgically removed.