Ganglion

Definition

The cause of ganglion cysts is not known. One theory suggests that trauma causes the tissue of the joint to break down forming small cysts, which then join into a larger, more obvious mass. The most likely theory involves a flaw in the joint capsule or tendon covering (sheath) that allows the joint tissue to bulge out.

Inclusions

• Ganglion of tendon sheath

Exclusions

• ganglion in yaws (1C1D.1)

Also indexed as

Nearby in Certain specified disorders of synovium or tendon

• FB42.0Acquired short Achilles tendon
• FB42.1Contracture of tendon sheath
• FB42.3Synovial hypertrophy, not elsewhere classified