Tanner Staging System

Adapted from Tanner, JM; Growth at Adolescence, 2nd ed. Oxford, England, Blackwell Scientific Publications, 1962.
Stage	Pubic Hair	Breast	Penis	Testes
I	Preadolescent	Preadolescent	Preadolescent	Preadolescent
II	Sparse, long, lightly pigmented, downy straight hair	Breast bud; breast and papilla elevated, with increased areolar diameter	Slight enlargement	Enlarged scrotum, pink, texture roughened
III	Increased pigmentation, more curly	Enlarged breast and areola with no contour sepearation	Increased length	Increased size
IV	Adult type, but less	Areola and papilla form secondary mound	Glans enlarged, increased breadth	Enlarged, darker in color
V	Adult distribution with spread to medial thighs	Nipple elevated, areola contour continuous with breast	Adult size	Adult size

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Last modification: July 8, 1997