I had my face swollen after some face stitches 16 months ago. What is the best way to remove it? Is it better to wait? (Photo)

I had some face stitches 16 months ago. A small swollen near to these stitches appear right after these stitches and it does not go a way. Is there a way to remove this swollen? Is it better to wait for another few months or should I do it now.

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