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Lymph node compartments in the neck. The central compartment (level VI) is defined laterally by the carotid sheaths, superiorly by the hyoid bone, and
inferiorly by the suprasternal notch. The lateral compartment contains superior jugular (level II), middle jugular (level III), and inferior jugular (level IV)
lymph nodes, as well as the posterior triangle nodal tissue bound by the posterior border of the sternocleidomastoid, the anterior border of the trapezius,
and the clavicle (level V). The division between levels II and III is a horizontal plane defined by the inferior body of the hyoid bone. The division between
levels III and IV is a horizontal plane defined by the inferior border of the cricoid cartilage. Level I contains the submental and submandibular lymph nodes.
(Reproduced with permission from The University of Texas MD Anderson Cancer Center.)
Source: Chapter 6. Medullary Thyroid Carcinoma, McGraw-Hill Manual: Endocrine Surgery
Citation: Morita SY, Dackiw AB, Zeiger MA. McGraw-Hill Manual: Endocrine Surgery; 2010 Available at: http://mhmedical.com/ Accessed: April
29, 2017
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