Possible cartilage graft exposure after infection as unresolving pain & tenderness in mucous membrane. What can be done? (photo)

4.5 months PO rev rhino. Infection with abscess and growths removed. No more drainage or lump, just very inflamed membrane with what looks like white cartilage above. International patient to US surgeon (already been back once) he said exposed cartilage will dissolve. Very painful and tender nasal cavity, fresh blood and sharp pains too. Please advise.Updated: "Not healing after infection and 2 growth removals from nasal cavity, rev rhino 4.5 months ago. Can mucous membrane heal? (photo)"