Skip to Content
Ganglions are small sacs (cysts) filled with clear, jellylike fluid. They
often appear as bumps on the hands and wrists, but they can also develop on the
feet, ankles, knees, or shoulders. A ganglion can grow out of a joint capsule,
which surrounds and protects the joint, or out of a tendon sheath, which covers
the tendon (the ropey fibers connecting muscle to bone). Most people with
ganglions notice that the bumps appear suddenly.
ByHealthwise StaffPrimary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency MedicineSpecialist Medical ReviewerHerbert von Schroeder, MD, MSc, FRCSC - Hand and Microvascular Surgery
Current as ofMay 23, 2016
Current as of:
May 23, 2016
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & Herbert von Schroeder, MD, MSc, FRCSC - Hand and Microvascular Surgery
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
© Copyright 2017 Rush Copley Medical Center • 2000 Ogden Avenue; Aurora, IL 60504
Main: 630-978-6200 • Physician Referral & Information: 630-978-6700 or 866-4COPLEY (866-426-7539)