(A) Genital development and pubic hair growth among boys

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A: Genital development and pubic hair growth among boys

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Presentation transcript:

(A) Genital development and pubic hair growth among boys (A) Genital development and pubic hair growth among boys. Stage G1 (upper left), prepubertal. Stage G2 (upper right), enlargement of testis to more than 2.5 cm, appearance of scrotal reddening, and increase in rugations. Stage G3, increase in length or 4 cm volume and, to a lesser extent, breadth of penis with further growth of testis. Stage G4, further increase in size of penis and testes and darkening of scrotal skin. Stages G5 and G6 (lower panels), adult genitalia. Stage P1 (upper panels), preadolescent, no pubic hair. Stage P2 (middle left), sparse growth of slightly pigmented, slightly curved pubic hair mainly at the base of the penis. Stage P3 (middle right), thicker curlier hair spread laterally. Stage P4 (lower left), adult-type hair that does not yet spread to medial thighs. Stage P5 (lower right), adult-type hair spread to medial thighs. (B) Appearance of pubic and labial hair among girls. Stage PH1 (upper left), prepubertal, no pubic hair. Stage PH2 (upper right, middle left), sparse growth of long, straight, or slightly curly minimally pigmented hair, mainly on labia. Stage PH3 (middle right), considerably darker and coarser hair spreading over mons pubis. Stage PH4 (lower left), thick adult-type hair that does not yet spread to the medial surface of the thighs. Stage PH5 (lower right), hair is adult type and is distributed in the classic inverse triangle. (C) Breast development. Stage B1 (upper panels), prepubertal, elevation of the papilla only. Stage B2, breast buds visible or palpable with enlargement of the areola. Stage B3, further enlargement of the breast and areola with no separation of their contours (not shown). Stage B4, projection of areola and papilla to form a secondary mound over the rest of the breast. Stage B5 (lower panel), mature breast with projection of papilla only. (Reproduced, with permission, from Rudolph CD, Rudolph AM, Lister GE, First LR, Gershon AA. Rudolph's Pediatrics. 22nd ed. New York: McGraw-Hill, 2011.) Source: Endocrinology, Rudolph’s Pediatrics, 22e, Self-Assessment and Board Review Citation: Cabana MD. Rudolph’s Pediatrics, 22e, Self-Assessment and Board Review; 2014 Available at: http://accesspediatrics.mhmedical.com/ViewLarge.aspx?figid=49013613&gbosContainerID=0&gbosid=0 Accessed: December 29, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved