Central Axillary Lymph Nodes

nodi lymphoidei axillares centrales

The central axillary nodes are three or four large nodes deep in the fat at the base of the axilla, behind the pectoralis minor. They collect lymph from the pectoral, lateral and subscapular groups and are usually the easiest axillary nodes to feel.

Anatomical Data

Structure & Secretions

Location	Base of the axilla, embedded in axillary fat behind the pectoralis minor (level II)
Receives lymph from	Pectoral axillary lymph nodes Lateral axillary lymph nodes Subscapular axillary lymph nodes
Lymphatic drainage	Apical axillary lymph nodes

Biomechanics

Function & Actions

Collect and further filter lymph passed on from the other axillary groups.

Clinical Relevance

Clinical Notes

When examining the armpit, the central nodes are felt by pressing the fingers high into the axilla against the chest wall with the patient's arm supported. The intercostobrachial nerve runs through this group, so its injury during dissection causes numbness of the inner upper arm. They correspond to level II in surgical terms.

Pathology

Common Injuries & Conditions

Central Axillary Lymphadenopathy

Enlarged central nodes from infection or cancer anywhere in the axillary drainage territory.

Intercostobrachial Nerve Injury

Numbness or pain of the medial upper arm and axilla after the nerve is cut during axillary node clearance.

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