About 38 years ago, I had a ganglion cyst on my right wrist. The doctor told me to have someone smack it with a big hardback book!. Went to another doctor and had it removed, twice! Way back then, doctors thought it was caused by repetitive motion (was the computer operator for a major distribution center with hours of 10 key entry daily). I would say, he should have it removed and if he is using the keyboard/10 key pad for extended periods of time daily, to ask the doctor to prescribe a brace to support the wrist while it heals.
About 38 years ago, I had a ganglion cyst on my right wrist. The doctor told me to have someone smack it with a big hardback book!. Went to another doctor and had it removed, twice! Way back then, doctors thought it was caused by repetitive motion (was the computer operator for a major distribution center with hours of 10 key entry daily). I would say, he should have it removed and if he is using the keyboard/10 key pad for extended periods of time daily, to ask the doctor to prescribe a brace to support the wrist while it heals.