What's this lump on the side of my nostril? (Photo)

I've had rhinoplasty and two top revisions, I have this lump on the side of my nostril where if someone got their nose pierced that's where it would be. It feels softish and I can press it in but it pops right back out again. My last tip revision I asked the surgeon if he could fix it at the same time and he said it's probably scar tissue. I just noticed a stitch inside my nose on the other side of it the problem didn't go away. What is it and is it fixable? I want to get a full revision anyway

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