Puberty

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Precocious puberty is

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the onset of secondary sexual characteristics prior to the age 6 in black girls and age 7 in white girl

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Precocious puberty is

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the onset of secondary sexual characteristics prior to the age 6 in black girls and age 7 in white girl

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Precocious puberty is

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the onset of secondary sexual characteristics prior to the age 6 in black girls and age 7 in white girl

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GnRH-dependent, or true (central) precocious puberty, develops secondary to

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early activation of the hypothalamic-pituitary-gonadal axis. The most common causes are idiopathic; other causes include infection, inflammation, or injury of the central nervous system. In idiopathic precocious puberty, the arcuate nucleus in the hypothalamus is prematurely activated.

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GnRH-dependent, or true (central) precocious puberty, develops secondary to

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early activation of the hypothalamic-pituitary-gonadal axis. The most common causes are idiopathic; other causes include infection, inflammation, or injury of the central nervous system. In idiopathic precocious puberty, the arcuate nucleus in the hypothalamus is prematurely activated.

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GnRH-independent sex hormone production, or

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precocious pseudopuberty (peripheral), results from sex hormone production (androgens or estrogens) independent of hypothalamic-pituitary stimulation.

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GnRH-independent sex hormone production, or

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precocious pseudopuberty (peripheral), results from sex hormone production (androgens or estrogens) independent of hypothalamic-pituitary stimulation.

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GnRH-independent sex hormone production, or precocious pseudopuberty (peripheral), results from sex hormone production (androgens or estrogens) independent of hypothalamic-pituitary stimulation. This condition can be caused by

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ovarian cysts or tumors, McCune-Albright syndrome, adrenal tumors, or iatrogenic causes. Some tumors, such as granulosa cell tumors, teratoma, or dysgerminomata, directly secrete androgen.

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GnRH-independent sex hormone production, or precocious pseudopuberty (peripheral), results from sex hormone production (androgens or estrogens) independent of hypothalamic-pituitary stimulation. This condition can be caused by

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ovarian cysts or tumors, McCune-Albright syndrome, adrenal tumors, or iatrogenic causes. Some tumors, such as granulosa cell tumors, teratoma, or dysgerminomata, directly secrete androgen.

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GnRH-independent sex hormone production, or precocious pseudopuberty (peripheral), results from sex hormone production (androgens or estrogens) independent of hypothalamic-pituitary stimulation. This condition can be caused by

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ovarian cysts or tumors, McCune-Albright syndrome, adrenal tumors, or iatrogenic causes. Some tumors, such as granulosa cell tumors, teratoma, or dysgerminomata, directly secrete androgen.

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McCune-Albright syndrome (polyostotic fibrous dysplasia) is characterized by

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multiple bone fractures, café-au-lait spots, and precocious puberty. Premature menarche can be the first sign of the syndrome. The syndrome is thought to result from a defect in cellular regulation with a mutation in the alpha subunit of the G protein that stimulates cAMP formation, which causes affected tissues to function autonomously. This mutation causes the ovary to produce estrogen without the need for FSH, resulting in sexual precocity.

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McCune-Albright syndrome (polyostotic fibrous dysplasia) is characterized by

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multiple bone fractures, café-au-lait spots, and precocious puberty. Premature menarche can be the first sign of the syndrome. The syndrome is thought to result from a defect in cellular regulation with a mutation in the alpha subunit of the G protein that stimulates cAMP formation, which causes affected tissues to function autonomously. This mutation causes the ovary to produce estrogen without the need for FSH, resulting in sexual precocity.

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Ovarian Tumors that cause precocious puberty

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Ovarian Tumors
Granulosa-theca cell
Lipoid cell
Gonadoblastoma
Cystadenoma
Germ cel

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Ovarian Tumors that cause precocious puberty

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Ovarian Tumors
Granulosa-theca cell
Lipoid cell
Gonadoblastoma
Cystadenoma
Germ cel

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Ovarian Tumors that cause precocious puberty

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Ovarian Tumors
Granulosa-theca cell
Lipoid cell
Gonadoblastoma
Cystadenoma
Germ cel

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The most common form of CAH

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21-hydroxylase deficiency, presents at birth with the finding of ambiguous genitalia.

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21-hydroxylase deficiency, presents at birth with the finding of ambiguous genitalia.

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The most common form of CAH

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The most common cause of delayed puberty with an elevated FSH is

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gonadal dysgenesis, or Turner syndrome

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The most common cause of delayed puberty with an elevated FSH is

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gonadal dysgenesis, or Turner syndrome

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he most common tumor associated with delayed puberty

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Craniopharyngioma

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he most common tumor associated with delayed puberty

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Craniopharyngioma

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the most common cause of primary amenorrhea in women with normal breast development.

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Müllerian agenesis, or Mayer-Rokitansky-Küster-Hauser syndrome, is the most common cause of primary amenorrhea in women with normal breast development. In this syndrome, there is congenital absence of the vagina and usually an absence of the uterus and fallopian tubes. Ovarian function is normal, because the ovaries are not derived from müllerian structures; therefore, all the secondary sexual characteristics of puberty occur at the appropriate time.

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the most common cause of primary amenorrhea in women with normal breast development.

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Müllerian agenesis, or Mayer-Rokitansky-Küster-Hauser syndrome, is the most common cause of primary amenorrhea in women with normal breast development. In this syndrome, there is congenital absence of the vagina and usually an absence of the uterus and fallopian tubes. Ovarian function is normal, because the ovaries are not derived from müllerian structures; therefore, all the secondary sexual characteristics of puberty occur at the appropriate time.

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the most common cause of primary amenorrhea in women with normal breast development.

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Müllerian agenesis, or Mayer-Rokitansky-Küster-Hauser syndrome, is the most common cause of primary amenorrhea in women with normal breast development. In this syndrome, there is congenital absence of the vagina and usually an absence of the uterus and fallopian tubes. Ovarian function is normal, because the ovaries are not derived from müllerian structures; therefore, all the secondary sexual characteristics of puberty occur at the appropriate time.

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In this condition, the genital plate canalization is incomplete,

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The simplest genital tract anomaly is imperforate hymen. In this condition, the genital plate canalization is incomplete, and the hymen is, therefore, closed. Menarche occurs at the appropriate time, but because there is obstruction to the passage of menstrual blood, it is not apparent.

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In this condition, the genital plate canalization is incomplete,

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The simplest genital tract anomaly is imperforate hymen. In this condition, the genital plate canalization is incomplete, and the hymen is, therefore, closed. Menarche occurs at the appropriate time, but because there is obstruction to the passage of menstrual blood, it is not apparent.