Preferred Label : Neck Lymph Node Boundary Level II;
NCIt related terms : CERVICAL LYMPH NODE LEVEL II;
NCIt definition : Neck lymph node boundary level II contains the upper jugular nodal group. It is divided
by the accessory nerve into sublevels IIA and IIB. The following anatomical structures
define sublevel IIA: Superior: skull base; inferior: horizontal plane defined by the
inferior border of the hyoid bone; anterior (medial): stylohyoid muscle; posterior
(lateral): vertical plane defined by the spinal accessory nerve. The following anatomical
structures define sublevel IIB: Superior: skull base; inferior: horizontal plane defined
by the inferior body of the hyoid bone; anterior (medial): vertical plane defined
by the spinal accessory nerve; posterior (lateral): lateral border of the sternocleidomastoid
muscle. (partially adapted from AJCC 8th ed.);
Alternative definition : CDISC: Cervical lymph nodes located in the upper jugular group above the level of
the hyoid bone.;
NCI Metathesaurus CUI : CL1921693;
Origin ID : C202889;
UMLS CUI : C5908841;
Anatomic structure is physical part of
- Semantic type(s)
- concept_is_in_subset
