I developed a bump during my preload years. Turned out to be one of those. I got it treated on comp. Didn't have to go out, though, just light duty for a few days. I had outpatient surgery done, while I was awake. They numbed my arm from the armpit down and went to town on the cist, which was in the top of the bend in my right wrist. Surgery was quick and painless. Arm was numb for quite some time. Felt like i was carrying a bag of rocks.
Except for the small scar, you wouldn't even know I had the procedure.