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NCI Dictionary of Cancer Terms


nipple  listen  (NIH-pul)

  In anatomy, the small raised area in the center of the breast through which milk can flow to the outside.

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Drawing of female breast anatomy showing  the lymph nodes, nipple, areola, chest wall, ribs, muscle, fatty tissue, lobe, ducts, and lobules.
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Anatomy of the male breast; drawing shows the nipple, areola, fatty tissue, ducts, nearby lymph nodes, ribs, and muscle.