title: Case report: aspirated foreign body acting as tumor marker.
mesh_terms: D001980:Bronchi / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D003937:Diagnosis, Differential; D005547:Foreign Bodies / Q000473:pathology*; D005549:Foreign-Body Reaction / Q000473:pathology; D006801:Humans; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged