What could be the cause of the dent on nose after rhinoplasty (3 years post-op)? (photo)

It’s been 3 years post op I’m going to get a revision done but every single doctor I’ve asked has never seen a case like mine. About a year and a half after a dent formed on my nose. My breathing is terrible and some say it might be an infection I’m going to fly to get it done but I was wondering what some of the Drs think. Anything helps