Education  |   June 2017
Carotid Body Paraganglioma: A Rare Tumor with Serious Anesthetic Challenges
Author Notes
  • From the Department of Anesthesiology and Perioperative Medicine (A.T.T., D.-T.T.) and Department of Plastic Surgery (S.T.), University of Texas MD Anderson Cancer Center, Houston, Texas.
  • Address correspondence to Dr. A. T. Truong: atruong@mdanderson.org
Article Information
Education / Images in Anesthesiology / Cardiovascular Anesthesia / Central and Peripheral Nervous Systems / Coagulation and Transfusion / Neurosurgical Anesthesia
Education   |   June 2017
Carotid Body Paraganglioma: A Rare Tumor with Serious Anesthetic Challenges
Anesthesiology 6 2017, Vol.126, 1170. doi:10.1097/ALN.0000000000001561
Anesthesiology 6 2017, Vol.126, 1170. doi:10.1097/ALN.0000000000001561
THIS carotid angiogram investigating a neck mass shows a 4 × 3 cm tumor splaying the carotid bifurcation (lyre sign), typical of a carotid body paraganglioma. This rare tumor has a reported incidence of 1 to 2 per 100,000.1  Encasing the internal carotid artery (ICA) and the carotid sinus, it receives numerous branches from the external carotid artery (ECA), resulting in a dense tumor blush. A second lesion, an atheromatous plaque, is noted, causing a 70% stenosis of the ICA.
From these findings, several perioperative anesthetic implications2  can be anticipated during resection. First, because a carotid body paraganglioma is a neuroendocrine tumor, release of catecholamines or association with a pheochromocytoma should be suspected. Endocrine evaluation will determine if preoperative α-blockade is needed to prevent intraoperative hypertensive crises. The tumor blush from the neoplastic vascular proliferation is indicative of an increased risk of profuse hemorrhage. Consequently, tumor biopsy is contraindicated. Preoperative tumor embolization should be considered3  and the need for rapid blood transfusion anticipated. The ICA plaque may lead to cerebrovascular accidents by obstruction of cerebral blood flow and by embolic stroke from plaque dislodgement during ICA dissection. Finally, tumor invasion may lead to carotid sinus hypersensitivity, and carotid sinus manipulation may precipitate severe bradycardia.
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