title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 47-1988. An 86-year-old man with nodular pulmonary densities.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002283:Carcinoma, Bronchogenic / Q000175:diagnosis; D003937:Diagnosis, Differential; D006801:Humans; D008168:Lung / Q000032:analysis / Q000473:pathology; D008175:Lung Neoplasms / Q000175:diagnosis; D008297:Male; D012825:Silicon / Q000032:analysis; D012829:Silicosis / Q000175:diagnosis / Q000473:pathology*
chemical_list: D012825:Silicon