Went to see a doctor recently about a lump on the palm of my hand. Left hand so it wasn't caused by what you might think. People at the office told me they knew what it was and that it could be cut out by surgery.
When the doctor saw it, he confirmed it was not cancer. I asked if it should be cut out as mentioned by others. He laughed and told me when he practiced in the USA, patients would come in with articles or medical books and told him what to do.
He lay my hand on the table, scrubbed the palm with alcohol, picked up a large syringe filled with anasthetic and pushed it into the lump without any anasthetic and there was a spray of clear liquid. It hurt but he put the anasthetic in afterward and said, there was no need for an operation. What I learned was:
1. Don't take medical advice from anyone who doesn't have MD after their name
2. Go to a good hospital with a reputation
3. Ask to see a specialist, especially in the case of the OP
3. Do what he suggests.
You may ask questions, but he or she is a specialist for a reason.