Table 1 Surgical Levels of the head & Neck
From: How we do it: a method of neck dissection for histopathological analysis
Level I | Lower border of the body of the mandible superiorly, posterior belly of the diagastric muscle posteriorly, hyoid bone inferiorly and the midline medially |
|---|---|
Level II | Base of skull superiorly, lateral limit of the sternohyoid muscle anteriorly, posterior border of the sternocleidomastoid muscle posteriorly, and level of the hyoid bone inferiorly |
Level III | Level of the hyoid bone superiorly, lateral limit of the sternohyoid muscle anteriorly, the posterior border of sternocleidomastoid muscle posteriorly, and the omohyoid tendon inferiorly |
Level IV | Omohyoid tendon superiorly, lateral limit of the sternohyoid muscle anteriorly, posterior border of the sternocleidomastoid muscle posteriorly, and clavicle inferiorly |
Level V | Posterior border of sternocleidomastoid muscle anteriorly, anterior border of the trapezius muscle posteriorly, and clavicle inferiorly |