Dermatologist or Plastic Surgeon for Dilated Pore Excision?

I had (what was supposedly) a dilated pore removed by a plastic surgeon a few years ago. The area looked great for the first year, but I've been experiencing problems again for the past 2 years. It appears that the dilated pore is back in some form. I'm not sure if I should go back to my plastic surgeon or find a dermatological surgeon. I have a sense that the latter may have more experience dealing with this type of skin abnormality, but I'm not sure if this is true. Any advice?

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