Which regional nodes are easily accessible to palpation? Select all that apply
a. Central axillary nodes d. Internal mammary nodes
b. Pectoral nodes e. Lateral nodes
c. Subscapular nodes f. Rotter's nodes
A, B, C, E
The lymphatic drainage of the breast is via a complex network of lymph vessels and nodes. It is estimated that a majority of the lymph from the breast flows to the axillary nodes. The axillary nodes are composed of four groups: central axillary nodes (midaxillary), pectoral nodes (anterior), subscapular nodes (posterior), and brachial nodes (lateral). The central axillary nodes receive lymph from the three other nodal groups. The lymph is then channeled from the central axillary nodes to the infraclavicular and supraclavicular nodes. The remainder of the lymph flows into the internal mammary chain or directly to the infraclavicular chain via the Rotter's nodes, deep in the chest or abdominal cavity, or to the other breast. The axillary nodes are easily accessible by palpation because of their superficial location. The internal mammary nodes are very deep in the chest wall and are inaccessible by palpation.
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