Ganglion cysts may look like harmless bumps on the hands or joints, but they are actually small fluid-filled sacs connected to the joint itself. While online "popping" tricks may be tempting, treating ...

Medically reviewed by Lauren Schlanger, MD Key Takeaways A ganglion cyst is the most common cause of a lump on your hand or wrist and often feels round or oval. A carpal boss is a hard, bone-like lump ...