Is it normal to have pimple bumps around graft a year after surgery? (Photos)

It has been a year since I had Mohs and skin graft on end of my nose. I keep getting pimple like bumps that bleed and scab over around one side of the graft. My surgeon is confused. Not sure if it is maybe stiches working up or precancer. I'm worried he didn't get it all during surgery. What should I do? The bumps are not always in the same spot like the original cancer. One even came up in the middle of the graft.

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