Bilateral chemodectoma in the neck

An Unusual Cause of Stridor Following Anaesthesia Requiring Tracheostomy

“…Staining techniques utilizing the chromaffin reaction demonstrate the presence of catecholamines in varying quantities in these cells. In the adrenal medulla, paragangliomas result in phaeochromocytomata, which nearly always secrete catecholamines [1], whereas paragangliomas of the head and neck are rarely vasoactive. Vagal paragangliomas form 3-18% of all paragangliomas [2,3] and may affect the superior or inferior vagal nuclei, or the main trunk of the vagus.…”