Stages of Pubertal Development According to Tanner
Stages of pubertal development (according to Tanner). See also Table T1.
Picture: Tiina Ripatti
Stages of pubertal development (Tanner, 1962) adapted from 1
| Pubertal development in girl: breasts | |
|---|---|
| M1 | As in a child: Only the nipple is elevated. |
| M2 | Budding stage: The breast and the nipple are slightly elevated, and some glandular tissue is felt on palpation. The areola is enlarged. |
| M3 | The breast and the areola are further enlarged, and their contour forms a smooth curve when inspected from the side. |
| M4 | The areola forms an elevated mound projecting from the surrounding breast. |
| M5 | Mature breast: Only the nipple is elevated, and the areola is aligned with the contour of the breast. |
| Pubertal development in boy: genitals | |
| G1 | The testes (length < 20 mm), the scrotum, and the penis are of about the same size and proportions as in early childhood. |
| G2 | The scrotum and the testes are enlarged (length > 20 mm), the skin over the scrotum is slightly erythematous and thinner, but the penis is not yet enlarged. |
| G3 | The penis has grown longer, and the scrotum and the testes are further enlarged. |
| G4 | The penis has grown further, also in diameter, the glans has developed, and the testes and the scrotum are further enlarged, the colour of the scrotum has become darker. |
| G5 | The genitals are the same size and shape as in adults. |
| Pubic hair (girls and boys) | |
| P1 | As in a child: The pubic hair does not differ from the hair of the abdomen. |
| P2 | Some long, slightly pigmented, downy, straight or slightly curled hair on the labia or at the base of the penis. |
| P3 | Notably darker, stronger, and curlier hair spreading slightly to the symphysis. |
| P4 | Adult-type hair but on a clearly smaller area. Does not extend to the inner aspect of the thighs. |
| P5 | Adult-type hair with horizontal upper border that does not spread towards the navel but does spread to the inner aspect of the thighs. |
| P6 | Hair spreads towards the navel. |
References
- Välimäki M, Sane T, Dunkel L (eds.). Endokrinologia [Endocrinology]. 2nd new edition. Duodecim Publishing Company Ltd 2009, pages 528 and 535.
Primary/Secondary Keywords
- pubertal development
- delayed puberty
- puberty
- precocious puberty
- boy
- girl