The average size of these cysts is 2.0 cm, but excised cysts of more than 5 cm have been reported. The size of the cyst may vary over time and may increase after activity. Between 50 and 70% of all masses on the hand and wrist are expected to be<unk> s. Sites<unk> s most frequently occur around the dorsum of the wrist and on the fingers. A common site of the occurrence is along the extensor carpi radialis brevis, as it passes over the dorsum of the wrist joint. Although most commonly found in the wrist,<unk> s also may occur in the foot.<unk> s are "commonly observed in association with the joints and tendons of the appendicular skeleton, with 88% 'in communication with the multiple small joints of the hand and wrist' and 11% with those of the foot and ankle". Wrist They commonly are found near the wrist joint, especially at the scapholunate area. Common wrist ganglions include: * dorsal wrist ganglion * volar wrist ganglion * volar retinaculum ganglion * extensor retinaculum ganglion * occult ganglion * intraosseous ganglion * mucous cyst Foot In a 2007 study of patients in Glasgow whose foot lumps were removed surgically, 39 of 101 cases were<unk> s. The study replicated earlier findings that no<unk> s were found on the sole or heel. The authors wrote, "Although lumps in these areas may be ganglia, the surgeon should probably consider other diagnoses in the first instance." The researchers noted a preponderance of occurrence among females (85%) and that 11 of the other cases had been misdiagnosed as<unk> s before surgery.<unk> s are not limited to the hands and feet. They may occur near the knee, commonly near the cruciate ligaments, but they may occur at the origins of the gastrocnemius tendon, and anteriorly on Hoffa's infrapatellar fat pad. At the shoulder, they typically occur at the acromioclavicular joint or along the biceps tendon. Other From their common origin at a joint or tendon,<unk> s may form in a wide range of locations. Rarely, intraosseous<unk> s occur, sometimes in combination with a cyst in the overlying soft tissue. Rare cases of intramuscular<unk> s in the gastrocnemius muscle of the calf have been reported. It is possible for a cyst to be considerably displaced from the joint. In one extreme case, a<unk>  was observed to propagate extensively via the conduit of the common peroneal nerve sheath to a location in the thigh; in such cases surgery to the proximal joint to remove the articular connection may remove the need for a riskier, more extensive surgery in the neural tissue of the thigh. The cysts may intrude into the spine, which may cause pain and dysesthesia in distant extremities. Cystic adventitial disease, in which a cyst occurs within the popliteal artery near the knee, has been proposed recently to occur by an articular mechanism, with a conduit leading from the joint, similar to the development of<unk> s, that spreads within the peroneal nerve. Cysts that were compressing one or more nerves and causing bone erosions have been reported to occur near the shoulder joint. Cyst_Profile2.Cyst on right wrist<unk>  on Foot.Cyst on dorsum of right foot Kyste420.Cyst on a finger<unk>  On Right Index Finger.Small cyst on right index finger<unk> _lanced.small cyst on thumb lanced with red-hot needle File:Ganglion Cyst on the palmar side of the left wrist.Ganglion cyst on the palmar side of the left wrist
Ganglion cyst
Tornwaldt cyst
Tarlov cyst
Dentigerous cyst
Nuchal fibroma
Hidrocystoma
Ganglioneuroma
Choristoma