SCOTTSDALE, Ariz. -- San Francisco Giants right-hander Matt Cain has undergone a procedure to have a cyst removed from his upper right arm. General manager Bobby Evans made the announcement Thursday, ...
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 ...