The infamous "crater" or "saucer" deformity after Gynecomastia surgery due to over resection of fat is hard to fix. But I am not so sure that that is exactly what you have.
Classically, such deforming indentation is usually present at rest - yet you state "My nipple and area around it sinks in when I raise or flex my arm". That leads me to believe that your deformity, or at least a large part of it, is due to adherence of your "nipple and area around it" (?areola) to the underlying muscle.
I think the nipple / areola complexes would need to be freed from the underlying muscle, fat should be infected in subcutaneous plane to even up any raised edges and you should be mobilized to prevent adherence again in this fashion. If it works, the indentations should largely be gone.
Good Luck.
Peter A Aldea, MD, FACS
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