Can a rasping correct growing callus and asymmetry 12 years post rhinoplasty? (Photos)

Thank you for your question.
Simple rasping may help but is unlikely to correct the problem completely. Please discuss this with your surgeon. In my opinion, a simple rasping can be tried as an initial procedure to see if it would result in a satisfactory improvement. You should, however, be prepared for redo if needed. All The Best !

Rasping should be able to address this residual dorsal hump.  It appears to involve only the nasal bone and not the midvault cartilages. 

The small bump can be rasped down and it might make enough of a difference to satisfy your needs. It is a good simple start. If that fails to make a big difference in your opinion then move on to a complete revision. RegardsDr. J

Based on your photos- it will require a complete Revision Rhinoplasty to achieve a more refined, more elegant nose. I suggest that you seek an experienced Board Certified PS with extensive Rhinoplasty/Revision Rhinoplasty experience for in person consultation 

The photographs demonstrate significant asymmetrical nasal bones, along with a large dorsal hump on the patient's right side in addition to collapsed upper lateral cartilage more so on the right than the left. The collapsed upper lateral cartilage makes the dorsal hump look bigger than it really is. A full revision rhinoplasty will be required to not only shave the dorsal hump down, but osteotomies are then going to be required to close the open roof created from the hump removal itself. Spreader graft placement will also be required to augment the collapsed upper-level cartilage. It's important to know how much cartilage is left over on the inside of the nose for grafting purposes.