title: [2 cases of chemodectoma--catecholamine secreting and non-secreting tumors].
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000378:metabolism*; D002395:Catecholamines / Q000378:metabolism*; D004428:Ear Neoplasms / Q000378:metabolism*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010236:Paraganglioma, Extra-Adrenal / Q000378:metabolism*
chemical_list: D002395:Catecholamines