Cartilage bumps removed in-office? I have only heard of rasping for bone

If after surgery a residual hump remains we can rasp it as well as you mention (when its bone), but when we use cartilage grafts in some patients this may cause persistent edema/inflammation
Most of the time this will fixed by itself once the inflammation process finishes, if it persists we need to do what your surgeon suggests, rasp/remove the irregularity.

Yes, it's not uncommon for minor cartilage bumps to remain after rhinoplasty. While rasping is typically used to smooth out bone irregularities, cartilage imperfections can often be addressed with a minor in-office procedure. Your surgeon can trim or reshape the cartilage using specialized instruments under local anesthesia. This approach is less invasive than a full surgical revision and usually involves minimal downtime.
It's important to discuss the specifics with your surgeon, who can explain the procedure, potential risks, and expected outcomes based on your individual situation.
Please consult your medical professional for personalized advice and to determine the best course of action.