title: Ectopic production of calcitonin.
mesh_terms: D000368:Aged; D002116:Calcitonin / Q000096:biosynthesis / Q000097:blood; D002283:Carcinoma, Bronchogenic / Q000378:metabolism*; D018288:Carcinoma, Small Cell / Q000097:blood / Q000188:drug therapy / Q000378:metabolism; D003520:Cyclophosphamide / Q000627:therapeutic use; D006729:Hormones, Ectopic / Q000096:biosynthesis*; D006801:Humans; D008175:Lung Neoplasms / Q000097:blood* / Q000378:metabolism*; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use; D011863:Radioimmunoassay
chemical_list: D006729:Hormones, Ectopic; D003520:Cyclophosphamide; D002116:Calcitonin; D008727:Methotrexate