The doctor said that mucous gland cyst had better be removed by surgery, so how did ancient people treat it?

This friend accidentally saw your problem. Let me tell you, I still need surgery. When I was in junior high school, I got salivary gland cyst. I thought it would be fine after a while, but the result was not good. I often accidentally bit it. Later, I had an operation, a very simple little operation, and I was completely cured. I suggest you go to the operation early, so I won't disturb the ancients.