Dunn: Amenorrhea, etc. Flashcards
hematocolpos
imperforate hymen
–> retained menstruation in a female who has reached puberty
Thelarche
is the onset of female breast development.
Pubarche
is the appearance of sexual hair.
Adrenarche
is the onset of androgen-dependent body changes such as growth of axillary and pubic hair, body odor, and acne.
Menarche
is the onset of menstruation.
Tanner stage - Breast
Stage 1: Prepubertal
Stage 2: Breast bud stage with elevation of breast and papilla; enlargement of areola
Stage 3: Further enlargement of breast and areola; no separation of their contour
Stage 4: Areola and papilla form a secondary mound above level of breast
Stage 5:Mature stage: projection of papilla only, related to recession of areola
Tanner stage-Pubic Hair
Stage 1: Prepubertal (can see velus hair similar to abdominal wall)
Stage 2: Sparse growth of long, slightly pigmented hair, straight or curled, at base of penis or along labia
Stage 3: Darker, coarser and more curled hair, spreading sparsely over junction of pubes
Stage 4: Hair adult in type, but covering smaller area than in adult; no spread to medial surface of thighs
Stage 5: Adult in type and quantity, with horizontal distribution (“feminine”)
Primary amenorrhoea
Failure to menstruate by age 16
Secondary amenorrhoea
Absence of menstruation for >6 months
Primary Amenorrhea – Common Causes
Constitutional delay Chromosomal e.g. 45XO, 46XY Pituitary tumour e.g craniopharyngioma Congenital adrenal hyperplasia Genital tract anomaly (Plus all the causes of secondary amenorrhoea)
Primary Amenorrhoea – Clues to diagnosis
Constitutional delay
Chromosomal e.g. 45XO, 46XY Pituitary tumour e.g craniopharyngioma Congenital adrenal hyperplasia Genital tract anomaly Secondary sexual characteristics slow Stigmata of Turners S
Visual field defect
Virilisation
Imperforate hymen
Primary amenorrhoea – Diagnostic steps
Height, weight and BP Evaluate secondary sexual characteristics Look for signs of androgen excess Do visual fields Chromosomes FSH, LH and E2 Maybe HydroxyPROG, Androgens, PRL, TSH Maybe CT pituitary
Secondary amenorrhoea – Common causes
Hypothalamic
- “Stress”
- Weight loss/gain (Anorexia)
- Post Pill and Depo Provera
PCO Syndrome (1:20 women)
Premature Menopause
- Idiopathic
- Iatrogenic
- Resistant ovary syndrome
Hyperprolactinaemia
- Physiological
- Pituitary adenoma
- Drug-induced
Remember also pregnancy & progestins!
Secondary amenorrhoea – Uncommon causes
Kallman’s Syndrome Sheehan’s Syndrome Cushing’s Syndrome Other Pituitary Tumors Post encephalitis/trauma Thyroid disease Androgen-producing Tumors Asherman’s Syndrome (infection/ miscarriage/ termination of pregnancy/ post-partum hemorrhage curettage too aggressive --> endometrium collapses on itself)- give high doses of estrogen, put in IUD
Cervical stenosis
Secondary amenorrhoea – Clinical evaluation
History: Life events Weight/Exercise history Pregnancy Drugs Galactorrhoea Hot flushes (premature ovarian failure) Headaches/Vision
Examination: Height/Weight BP 2ary Sexual characteristics Hirsutism/Virilisation Visual fields Galactorrhoea Genital tract oestrogenisation Cervical stenosis
Secondary amenorrhoea - primary tests
FSH LH E2 TSH PRL Androgens Ultrasound pelvis Visual fields Progesterone challenge test
Secondary Tests: CT Pituitary Other pituitary hormones Dexamethasone suppression HydroxyPROG Hysteroscopy or HSG Laparoscopy & ovarian biopsy
young lady with amenorrhea/ irregular periods
(obese, acanthosis nigricans, acne, etc. as well)
DDX
Pregnancy PCOS Hyperprolactinemia Premature ovarian failure Hypo/Hyperthyroid Hypopituitarism (usually tumor related) Hypothalamic amenorrhea (2/2 stress, weight changes, exercise) Endometrial scarring (Asherman’s syndrome) Anorexia nervosa Anabolic steroid use Other endocrine
US shows “string of pearls” multiple immature follicles
consistent with PCOS
Rotterdam Criteria
(2/3 of criteria met)
Oligoovulation/anovulation
Excess androgen activity (clinical or lab)
Polycystic ovaries on ultrasound
AND other causes are excluded
Pathophysiology of PCOS
Increased daily levels testosterone and androstenedione, higher levels of estrogen (mostly from peripheral conversion of androstenedione to estrone)
Increased estrone levels causing augmented response by the pituitary to GnRH and increased LH production
Also with hypothalamus directly aromatizing androgen to estrogen, raising local levels estrogen in anterior hypothalamus and stimulating positive feedback mechanism of LH
Elevated estrone also causing Negative feedback mechanism for LH resulting in low/low-normal levels.
Since FSH level is not totally depressed, follicular growth continuously stimulated but not to point of full maturation and ovulation
Follicles surrounded by hyperplastic thecal cells, luteinized in response to high LH levels (producing androgens)
Follicles last several months in immature phase then undergo atresia.
Tissue post atresia is also sustained by steady state of hormones and contributes to stromal tissue (producing androgens
Androgen peripherally converted to estrogen, causing augmented pituitary response to GnRH
Ultimately resulting in elevated LH and depressed FSH
Causes of PCOS
No definitive cause known, some likely factors:
Excess insulin- causing increased androgen production by the ovaries
Chronic low grade inflammation- eating certain foods in predisposed people
Genetics- having a first degree relative with PCOS makes it more likely
Exposure to excess androgens during fetal development- may cause male-pattern abdominal fat, increased insulin resistance, low grade inflammation
Complications of PCOS
Abnormal uterine bleeding
Infertility (secondary to anovulation)
Increased risk endometrial cancer
(from continuously high levels estrogen)
Increased CRP (cardiovascular dz marker)
Metabolic syndrome with increased risk cardiovascular disease
Higher incidence Type 2 DM, HTN, HLD
Increased risk NASH (nonalcoholic steatohepatitis)
OSA-(obstructive sleep apnea)
Treatment of PCOS: Irregular bleeding
Needing contraception? Oral contraceptives
Does not desire contraception? Provera daily x 5 days q2months to effect endometrial shedding (decreased risk endometrial hyperplasia and adenocarcinoma from unopposed estrogen)
treatment of PCOS: hirsutism
Oral contraceptive suppress ovarian and adrenal production of androgens and decrease hirsutism
Can also use corticosteroids for same result