Anatomical Classification of Axillary Lymph Nodes and Their Drainage Regions
Central Group: Role in Drainage and Metastasis
The central axillary lymph nodes serve as a key drainage point, playing a vital role in immune response and potential metastasis in cancers such as breast cancer.
Anatomical Classification of Axillary Lymph Nodes and Their Drainage Regions
Central Group: Role in Drainage and Metastasis
The axillary lymph nodes play a crucial role in lymphatic drainage and immune response. Among these, the central group serves as an intermediary station for lymph collected from peripheral axillary regions before passing into deeper lymphatic structures.
Classification of Axillary Lymph Nodes
- Anterior (Pectoral) Nodes: Receive lymph from the breast and anterior thoracic wall.
- Posterior (Subscapular) Nodes: Drain the upper back, shoulders, and posterior thoracic wall.
- Lateral (Humeral) Nodes: Responsible for draining lymph from the upper limb.
- Central Nodes: Located centrally, accumulating lymph before it reaches the apical nodes.
- Apical Nodes: Last station before lymph enters the subclavian lymphatic trunk.
Role of Central Group in Metastasis
The central lymph nodes act as a checkpoint, filtering and directing lymphatic fluid. In cases of malignancy, such as breast cancer, these nodes may harbor metastatic cells before they spread to systemic circulation. A thorough understanding of their function aids in diagnosing and treating lymphatic disorders.
Clinical Significance
The evaluation of axillary lymph nodes, particularly the central group, is integral to staging cancers, guiding surgical interventions, and optimizing treatment plans.
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