Pectoral axillary lymph node

Definition

An axiallary lymph node along the lower border of the Pectoralis minor, in relation with the lateral thoracic artery. Their afferents drain the skin and muscles of the anterior and lateral thoracic walls, and the central and lateral parts of the mamma; their efferents pass partly to the central and partly to the subclavicular groups of axillary glands.

Also known as anterior axillary lymph node, nodus lymphaticus pectoralis axillae, pectoral lymph node — per UBERON

The Pectoral axillary lymph node is a part of the Immune/Lymphatic.