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L4
: or supraclavicular
L3
or infraclavicular: cranially situated pectoral muscles
L2
: posterior to pectoral minor muscle
L1
: caudally to pectoral major
IM
Rotter
: enter major and minor pectoral muscle
REGIONAL NODES
Lymph node is tipically around the veins, 5
mm margin around the veins
With the arm raised, lymph L1 may
appear in the same CT court than L2
and L3