Preferred Label : Upper Jugular Lymph Node Group (Sublevels IIA and IIB);
NCIt definition : Lymph nodes located around the upper third of the internal jugular vein and adjacent
spinal accessory nerve, extending from the level of the skull base (above) to the
level of the inferior border of the hyoid bone (below). The anterior (medial) boundary
is the stylohyoid muscle (the radiologic correlate is the vertical plane defined by
the posterior surface of the submandibular gland) and the posterior (lateral) boundary
is the posterior border of the sternocleidomastoid muscle. Sublevel IIA nodes are
located anterior (medial) to the vertical plain defined by the spinal accessory nerve.
Sublevel IIB nodes are located posterior (lateral) to the vertical plane defined by
the spinal accessory nerve (the radiologic correlate is the lateral border of the
internal jugular on a contrast-enhanced CT scan). The upper jugular nodes are at greatest
risk for harboring metastases from cancers arising from the oral cavity, nasal cavity,
nasopharynx, oropharynx, hypopharynx, larynx, and parotid gland. (AJCC 8th ed.);
NCI Metathesaurus CUI : CL520301;
Origin ID : C132510;
UMLS CUI : C4331484;
Anatomic structure is physical part of
- Semantic type(s)
