Ectopic production of calcitonin.
D001984:Bronchial Neoplasms / Q000378:metabolism*; D002116:Calcitonin / Q000096:biosynthesis / Q000097:blood*; D002283:Carcinoma, Bronchogenic / Q000378:metabolism*; D018288:Carcinoma, Small Cell / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D011863:Radioimmunoassay
D002116:Calcitonin