Removing a callus/bony bump from the bridge of the nose.

Mild  bumps or irregularities may be perceived after he rhinoplasty especially if you have thin skin.   However  the whole bump should not reappear.  When that happens my concern is that  possibly not enough was removed in the first place.  My recommendation is to seek another consultation by an experienced rhinoplasty surgeon.  If the previous procedures were done using a closed technique then an open technique should be used to completely  visualize the anatomy and addressed problem directly.  If you have thin skin the bone and cartilage should be covered with a blanket of temporal fascia that will help smooth the contours and minimize contour deformities that you can see or feel.

andyzworld,

Schedule a follow-up appointment with your surgeon.  Occasionally a callus can return, and it would take a short revisionary surgery to rasp it down again.   In addition, you may benefit by taping your nose postoperatively.  Good luck.