title: Metallic foreign body embedded in the cheek for 20 years.
abstract: The unique tissue response to a knife blade embedded for more than 20 years in the cheek of a patient is discussed. Chronic proliferative inflammation resulted in iron corrosion products that were phagocytized by inflammatory cells.
mesh_terms: D002610:Cheek / Q000473:pathology*; D005547:Foreign Bodies / Q000473:pathology*; D005549:Foreign-Body Reaction / Q000473:pathology; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged
chemical_list: D008670:Metals