title: Chemodectoma of the vagus nerve. Report of a case with ultrastructural study.
abstract: Light and electron microscopic studies of a chemodectoma of the vagus nerve are presented. Forty-four cases of vagal chemodectoma have been reported to date, but no electronmicroscopic studies have been published. The ultramicroscopic studies showed the presence of clear and dark cells and membrane-bound neurosecretory granules, and the absence of sustentacular cells and nerve endings. Similar findings have been reported in cases of carotid body and glomus jugulare tumors.
mesh_terms: D002462:Cell Membrane / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005260:Female; D006056:Golgi Apparatus / Q000648:ultrastructure; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D009411:Nerve Endings / Q000648:ultrastructure; D010236:Paraganglioma, Extra-Adrenal / Q000473:pathology*; D014630:Vagus Nerve / Q000473:pathology / Q000648:ultrastructure