Why would gynecomastia surgeon cut nipple?

I just had gyno surgery (tissue removal/lipo). There are bottom incisions as expected. But one of my nipples is cut and stitched right in the center of it. Does anyone know why this may have been done, or was it an error? It is stitched and scabbing so I can't tell if it's a clear scalpel cut or a tear. I am worried what it will look like once it's healed. I have not seen the surgeon again yet. I've only seen a nurse for a general post-op but did not see this until I got home.