Preadolescent. Elevation of nipple only
Stage 2 Stage 3
Breast bud stage. Elevation of breast and nipple as a small mound; enlargement of areolar diameter
Further enlargement of elevation of breast and areola, with no separation of their contours
Projection of areola and nipple to form a secondary mound above the level of breast
Mature stage; projection of nipple only. Areola has receded to general contour of the breast (although in some normal individuals the areola continues to form a secondary mound).
(Illustrations through the courtesy of W. A. Daniel, Jr., Professor Emeritus, Division of Adolescent Medicine, University of Alabama, Birmingham.)
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