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MSKCC classification of neck nodes, level 3, level 5, 2b (lateral,…
MSKCC classification of neck nodes
1a
cranially
genio hyoid
caudally
hyoid
anteroirly
symphysis menti
posteriorly
hyoid
medially midline
laterally
medial edge
edge , anterior belly digastric
1b
anteriorly
cranially
myelohyoid
posteriorly
sub mandibular gland
medially
lateral edge
laterally
medial border of mandible
2a
cranial
inferior border of lateral process ofC1
caudal
hyoid
anteriorly
posterior border of
posteiorly
posteior edge of IJV
lateral
medial border of SCM
medial
medial border of ICA
level 3
medial
ICA
lateral
medial edge of SCM
posterior
posterior edge of SCM
cranial
hyoid
anterior
anterior edge of SCM
caudal
cricoid
level 5
5b
transverse cervical vessels
5a
hyoid
cricoid
medially
paraspinal muscles
anteriorly
posterior border SCM
posteriorly
anterior border , trapezius
laterally
platysma
2b
lateral
anteriorly
posteriorly
SCM
cranial
medial
caudal
LEVEL 4
posterior
caudally
sterno clavicular joint
anterior
Cranial
medial
lateral
NODAL INVOLVEMENT
most important prognostic factor ,
survival decreases by 50 %