Table 4.

Regional Nodal Contours: anatomical boundaries [14]

	Anteriorly	Posteriorly	Superiorly	Inferiorly	Medially	Laterally
SCV	bounded by the deep surface of the sternocleidomastoid and the deep cervical fascia	Lat: the anterior and medial borders of the anterior scalene muscle.		the posterior border was defined by the subclavian artery	lateral edge of the trachea excluding the thyroid gland and thyroid cartilage superiorly
		Med: medially to the carotid artery and internal jugular vein
IFV	the deep surface of the pectoralis major muscle	subclavian-axillary artery	the most superior aspect of the pectoralis minor muscle	level of the insertion of the clavicle into the manubrium	lateral edge of the clavicle	medial border of the pectoralis minor muscle

SCV supraclavicular fossa, IFV infraclavicular fossa