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QUICK GUIDE
L3:
above pectoralis muscles
CRANIAL:
Cranial subclavian artery or pectoral minor insert on coracoid (RTOG).
Where the subclavian artery passes the line between clavicle-1st rib (PROCAB)
CAUDAL
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:
ere e ax ary vesse s cross e me a e ge o pec ora m nor
ANT:
Pectoralis major
POST:
Ribs and intercostal muscles
LAT:
Medial border pectoral minor
MEDIAL:
The junction of subclavian and internal jugular veins