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A - MSRA Gynaecology [8] > [43] Amenorrhoea > Flashcards

[43] Amenorrhoea Flashcards

1
Q

What is amenorrhoea?

A

The absence of menstrual periods

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2
Q

How can amenorrhoea be classified?

A
  • Primary

- Secondary

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3
Q

What is oligomenorrhoea?

A

Irregular periods with intervals between menstrual cycles of more than 35 days and/or less than 9 periods per year

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4
Q

What is primary amenorrhoea?

A

Failure to commence menses

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5
Q

When can primary amenorrhoea be diagnosed in the absence of secondary sexual characteristics?

A

In girls 14+

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6
Q

When can primary amenorrhoea be diagnosed in the presence of secondary sexual characteristics?

A

In girls 16+

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7
Q

What are some examples of secondary sexual characteristics?

A
  • Pubic hair

- Breast development

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8
Q

What is secondary amenorrhoea?

A

When there is cessation of periods for > 6 months after menarche

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9
Q

Can causes of secondary amenorrhoea cause primary amenorrhoea?

A

Almost always, if they are established before menarche

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10
Q

What are some specific causes of primary amenorrhoea in the presence of secondary sexual characteristics?

A
  • Constitutional delay
  • Genitourinary malformations
  • Testicular feminisation (androgen resistance syndrome)
  • Hyperprolactinaemia
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11
Q

What is constitutional delay of menarche?

A

Where there is no abnormality but the girl is a little later than her peers in reaching menarche

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12
Q

What is a useful part of the history in identifying constitutional delay of menarche?

A

History of menarche in mother and sisters

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13
Q

What genitourinary malformations can lead to primary amenorrhoea in presence of secondary sexual characteristics?

A
  • Imperforate hymen
  • Transverse vaginal septum
  • Absence of uterus or vagina
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14
Q

What karyotype does androgen resistance syndrome occur in?

A

XY

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15
Q

What is the external appearance in androgen resistance syndrome?

A

Normal adolescent girl

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16
Q

What is the internal appearance in androgen resistance syndrome?

A

No female internal organs and gonads are testosterone producing testes

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17
Q

How can the presentation of androgen resistance syndrome vary?

A

On the degree of androgen sensitivity

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18
Q

What can cause hyperprolactinaemia leading to primary amenorrhoea?

A
  • Hypothyroidism
  • Medication
  • Pituitary tumours
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19
Q

What medications can lead to hyperprolactinaemia leading to primary amenorrhoea?

A

Phenothiazines

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20
Q

What can cause primary amenorrhoea in the absence of secondary sexual characteristics?

A
  • Ovarian failure
  • Other causes of failure of the HPA
  • Causes of ambiguous genitalia
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21
Q

What can cause ovarian failure leading to primary amenorrhoea?

A
  • Chemotherapy
  • Irradiation
  • Chromosomal gonadal abnormality
  • Developmental abnormality
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22
Q

What chromosomal abnormality can lead to primary amenorrhoea?

A

Turner’s syndrome

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23
Q

What developmental abnormality can lead to primary amenorrhoea?

A

Mullerian agenesis

24
Q

What can cause failure of the HPA leading to primary amenorrhoea?

A
  • Tumours
  • Irradiation
  • Infection
  • Head injury
25
What can cause ambiguous genitalia leading to primary amenorrhoea?
- Androgen secreting tumours | - Congenital adrenal hyperplasia
26
What is the most common cause of secondary amenorrhoea in women of childbearing age?
Pregnancy
27
What are the causes of secondary amenorrhoea with no signs of androgen excess?
- Physiological causes - Premature ovarian failure - Depot and implant contraception - Cervical stenosis and intrauterine adhesions (Asherman's syndrome) - Hypothalamic dysfunction - Loss of weight - Pituitary disease and hyperprolactinaemia - Thyroid disease - Iatrogenic
28
What are the physiological causes of secondary amenorrhoea?
- Pregnancy - Lactation - Menopause
29
What can be the causes of premature ovarian failure leading to secondary amenorrhoea?
- Autoimmune - Radiotherapy - Chemotherapy
30
What can cause hypothalamic dysfunction leading to secondary amenorrhoea?
- Stress - Excessive exercise - Eating disorders - Depression - Chronic systemic illness - Tumours
31
What can cause pituitary disease and hyperprolactinaemia leading to secondary amenorrhoea?
- Medication | - Recreational drugs
32
What are the iatrogenic causes of secondary amenorrhoea?
- Medication - Surgery - Irradiation - Chemotherapy
33
What surgeries can lead to secondary amenorrhoea?
- Hysterectomy - Endometrial ablation - Ovarian surgery
34
What are some signs of androgen excess in women?
- Hirsutism - Acne - Virilisation
35
What are some causes of secondary amenorrhoea in the presence of signs of androgen excess?
- PCOS - Cushing's syndrome - Late-onset congenital adrenal hyperplasia - Adrenal or ovarian carcinoma
36
What % of amenorrhoea cases can be caused by PCOS?
30%
37
What should be asked about in the history when assessing amenorrhoea?
- Duration - Contraception - recent and current - Vasomotor symptoms - Galactorrhoea - Exercise habits - Stresses - Medication history - PMH
38
What features should be looked for on examination in amenorrhoea?
- BMI - Signs of excessive androgens - Signs of thyroid disease or Cushing's syndrome
39
What investigations should be made into amenorrhoea?
- Pregnancy test - FSH and LH - Prolactin - Total testosterone and sex hormone-binding globulin - TFTs - Pelvic USS
40
What types of pregnancy test are available?
Urine or serum hCG
41
When are FSH and LH raised in amenorrhoea?
Ovarian failure
42
What can low FSH or LH suggest as the cause of amenorrhoea?
Constitutional delay or hypothalamic cause
43
What might raised testosterone indicate as the cause of amenorrhoea?
- Androgen secreting tumour | - Late-onset CAH
44
When might slightly elevated testosterone levels be seen?
PCOS
45
In what condition might pelvic ultrasound be helpful?
PCOS
46
When should a pelvic ultrasound be performed to check for normal anatomy?
In young girls who are not sexually active
47
What may be appropriate for some women in terms of investigation for amenorrhoea?
Referral and additional investigation
48
What additional investigations may be appropriate for some women with amenorrhoea?
- Karyotyping - MRI or CT - Hysteroscopy
49
When might karyotyping be appropriate in amenorrhoea?
To exclude Turner's syndrome, testicular feminisation, and rare conditions
50
When might MRI or CT be appropriate in amenorrhoea?
Where pituitary tumour is suspected
51
When might hysteroscopy be appropriate in amenorrhoea?
In suspected Asherman's syndrome
52
What does the management of amenorrhoea depend on?
Underlying cause and priorities of the woman
53
What should be done in women with amenorrhoea and low oestrogen levels/
Assess for the risk of osteoporosis
54
What conditions cause amenorrhoea and low oestrogen levels?
- Premature ovarian failure - Hypothalamic causes - Hypopituitarism - Hyperprolactinaemia
55
What should be done in women with amenorrhoea at risk of osteoporosis?
Ensure they have adequate calcium and vitamin D intake

A - MSRA Gynaecology [8] (52 decks)

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