Large hyperpigmentation on stomach; what can I do to get rid of this? (Photo)

Hi, this hyperpigmentation began for me around the age of 16. I do not remember if it happened before or after I started taking birth control, but stopping birth control hasn't changed its appearance. I'm 20 now and I really hate this mark on my stomach. It gets darker if it sees any sun and it's not on the surface (you can tell the mark goes deep). What would plastic surgeons suggest for this? Is there any kind of laser removal?

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