Ganglions (cysts) of the Wrist
Internet URL
http://orthoinfo.aaos.org/fact/thr_report.cfm?Thread_ID=183&topcategory=Hand 
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Sponsoring Agency
American Academy of Orthopaedic Surgeons
Description
Ganglion cysts grow on the top of the wrist (dorsal ganglions). But they can also be found on the underside of the wrist (between the thumb and your pulse point), at the end joint of a finger or at the base of a finger.