The lymphatic drainage of the breast is very important clinically. However, the lymphatic channels and associated lymph nodes are difficult to identify in a cadaveric specimen and should be reviewed with the aid of a reference textbook. In Figure 4.6, the major lymph node groups associated with the lymphatic drainage of the breast are identified. The arrows indicate the position of the major lymphatic channels and the direction of lymph flow. Approximately 75% of the lymph from the breast drains into the axillary lymph nodes.
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