Syndromes in gyne Flashcards
what is kallman syndrome ?
failure of gonadotropin-releasing hormone (GnRH) secreting neurons to migrate to the hypothalamus. It results in hypogonadotropic hypogonadism.
inheritance of KALLMAN syndrome?
X-linked recessive
clinical features of KALLMAN ?
lack of smell
delayed puberty’
hypogonadism,
cryptorchidism - testes fail to descend
Cleft lip/palate and visual/hearing defects are also seen
diagnosis of kallman ?
LH, FSH levels are normal or low
testosterone - low
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what is androgen insensitivity syndrome ?
X-linked recessive condition, resulting in an overall resistance to testosterone.
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clinical features of androgen insensitivity ?
patient will have a male karyotype (46XY) with an external female phenotype.
External female genitalia will be present and breasts may develop at puberty, due to the conversion of testosterone to oestradiol. However, there will be no internal female organs, and testicles will be present in the abdomen (potentially causing a groin swelling). If not identified at birth, it can present with primary amenorrhoea.
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what is klienfelter syndrome ?
karyotype 47XXY, resulting in hypergonadotropic hypogonadism. Although it can present with delayed puberty in male, the hormone profile would show elevated levels of FSH and LH, with low testosterone.
clinical features of klienfelter syndrome ?
tall stature, gynaecomastia and a small penis/ teste
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what is turner syndrome ?
It is caused by either the presence of only one sex chromosome (X) or a deletion of the short arm of one of the X chromosomes. Turner’s syndrome is denoted as 45,XO or 45,X.
clinical features of turner syndrome ?
short stature
shield chest, widely spaced nipples
webbed neck
multiple pigmented naevi
lymphoedema in neonates (especially feet)
heart
bicuspid aortic valve (15%),
coarctation of the aorta (5-10%)
endocrine
hypothyroidism
kidney
horseshoe kidney: the most common renal abnormality in Turner’s syndrome
PRIMARY AMENORRHEA