Tanner Stages of Girls During Puberty

Breast Stage

Glandular Tissue

Areola

I

none

follows skin contours

II

breast buds with small area of surrounding glandular tissue

begins to widen

III

breast becomes more elevated and extends beyond areola

continues to widen, remains in contour

IV

increased size and elevation

secondary mound projecting from contour

V

final adult size

returns to contour of breast with projecting central papilla

Pubic Hair Stage

Features

I

none

II

small amount of long, downy hair

III

more coarse, dark and curly, extends laterally

IV

adult type, extends across pubis but spares medial thighs

V

adult type, extends to medial surface of the thighs

Tanner Stage

Low Age

High Age

breast II

8.8

13.5

breast III

10

14.4

breast IV

10.8

15.5

breast V

11.8

18.8

pubic hair II

9.2

14.0

pubic hair III

10.2

14.7

pubic hair IV

10.8

15.2

pubic hair V

12.2

16.5

menarche

11.4

15.6