How Can A Cyst In The Under Arm Be Treated?

Several years ago, I developed a cyst in my underarm. It ruptured, but afterwards left a small opening in the fold of my underarm. When I went to my doctor to get the hole stitched shut, she said the episode was a fissure, and that it wouldn t be just as simple as sewing the hole shut; I would have to see a dermatologist as there would be parts of the fissure that would need to be removed. She said most people with fissures just leave them, so that s what I did. However, I d really like to clear/close the whole thing up. Any guidance on what to do would be appreciated.