A pediatric resident is performing well-child examinations in an adolescent clinic. Precise knowledge of the sexual maturity rating (Tanner staging) is critical for distinguishing normal pubertal progression from delayed or precocious puberty. Match the following male Tanner stages of development to their defining physical examination characteristics.
- Tanner Stage IIInitial enlargement of the testes (volume ≥ 4 mL) with thinning and reddening of the scrotum
- Tanner Stage IIISignificant increase in penile length with continued testicular growth
- Tanner Stage IVIncrease in penile breadth (girth), development of the glans, and darkening of scrotal skin
- Tanner Stage VAdult-sized genitalia with pubic hair extending to the medial aspect of the thighs
Cevap
Stage II correlates with initial testicular enlargement; Stage III correlates with penile lengthening; Stage IV correlates with increased penile breadth and glans development; Stage V correlates with adult genitalia and mature hair distribution.
The correct pairings accurately reflect the chronological sequence of male pubertal development: testicular enlargement marks the onset (Stage II), followed by penile lengthening (Stage III), penile widening with glans development (Stage IV), and finally, adult maturation (Stage V).
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Anahtar Kavram
Male Pubertal Development and Tanner Staging