Paraganglioma SNOMEDCT_US:253029009 SNOMEDCT_US:803009 NCIT:C3308 UMLS:C0030421 Carotid body tumours A carotid body tumor (also called paraganglionoma or chemodectoma) is a tumor found in the upper neck at the branching of the carotid artery. They arise from the chemoreceptor organ (paraganglion) located in the adventitia of the carotid artery bifurcation. HP:0002668 HP:0002670 SNOMEDCT_US:72787006 HP:0003004 SNOMEDCT_US:302833002 SNOMEDCT_US:127027008 Paragangliomas Carotid body tumors Neuroendocrine neoplasm