Ganglion Cyst Overview
A ganglion cyst is a tumor or swelling on top of a joint or the covering of a tendon (tissue that connects muscle to bone). It looks like a sac of liquid (cyst). Inside the cyst is a thick, sticky, clear, colorless, jellylike material. Depending on the size, cysts may feel firm or spongy.
Medically Reviewed by a Doctor on 10/23/2014
Elisa E. Aumont, MD
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