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The Tanner stages (Boy)
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The Tanner stages (Boy)
The stages for male genitalia development:
• Stage I (Preadolescent)- The testes, scrotal sac, and penis
have a size and proportion similar to those seen in early
childhood.
• Stage II - There is enlargement of the scrotum and testes
and a change in the texture of the scrotal skin. The scrotal
skin may also be reddened, a finding not obvious when
viewed on a black and white photograph.
• Stage III - Further growth of the penis has occurred, initially
in length, although with some increase in circumference. There also is increased growth of the testes and scrotum.
• Stage IV - The penis is significantly enlarged in length and circumference, with further development of the glans penis. The testes and scrotum
continue to enlarge, and there is distinct darkening of the scrotal skin. This is difficult to evaluate on a black-and-white photograph.
• Stage V - The genitalia are adult with regard to size and shape.
The stages in male pubic hair development:
Stage I (Preadolescent) - Vellos hair appears over the pubes with a degree of development similar to
that over the abdominal wall. There is no androgen-sensitive pubic hair.
• Stage II - There is sparse development of long pigmented downy hair, which is only slightly curled or
straight. The hair is seen chiefly at the base of penis. This stage may be difficult to evaluate on a
photograph, especially if the subject has fair hair.
• Stage III - The pubic hair is considerably darker, coarser, and curlier. The distribution is now spread over the junction of the pubes, and at this point that
hair may be recognized easily on black and white photographs.
• Stage IV - The hair distribution is now adult in type but still is considerably less that seen in adults. There is no spread to the medial surface of the thighs.
• Stage V - Hair distribution is adult in quantity and type and is described in the inverse triangle. There can be spread to the medial surface of the thighs.
#tannerstages #boy #puberty #pediatrics #medical #nursing #students #medical #nursepractitioner
The stages for male genitalia development:
• Stage I (Preadolescent)- The testes, scrotal sac, and penis
have a size and proportion similar to those seen in early
childhood.
• Stage II - There is enlargement of the scrotum and testes
and a change in the texture of the scrotal skin. The scrotal
skin may also be reddened, a finding not obvious when
viewed on a black and white photograph.
• Stage III - Further growth of the penis has occurred, initially
in length, although with some increase in circumference. There also is increased growth of the testes and scrotum.
• Stage IV - The penis is significantly enlarged in length and circumference, with further development of the glans penis. The testes and scrotum
continue to enlarge, and there is distinct darkening of the scrotal skin. This is difficult to evaluate on a black-and-white photograph.
• Stage V - The genitalia are adult with regard to size and shape.
The stages in male pubic hair development:
Stage I (Preadolescent) - Vellos hair appears over the pubes with a degree of development similar to
that over the abdominal wall. There is no androgen-sensitive pubic hair.
• Stage II - There is sparse development of long pigmented downy hair, which is only slightly curled or
straight. The hair is seen chiefly at the base of penis. This stage may be difficult to evaluate on a
photograph, especially if the subject has fair hair.
• Stage III - The pubic hair is considerably darker, coarser, and curlier. The distribution is now spread over the junction of the pubes, and at this point that
hair may be recognized easily on black and white photographs.
• Stage IV - The hair distribution is now adult in type but still is considerably less that seen in adults. There is no spread to the medial surface of the thighs.
• Stage V - Hair distribution is adult in quantity and type and is described in the inverse triangle. There can be spread to the medial surface of the thighs.
#tannerstages #boy #puberty #pediatrics #medical #nursing #students #medical #nursepractitioner
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