Obs & Gynae Flashcards
Uterine causes of abnormal bleeding
Endometrial cancer (PMB)
Fibroid (menorrhagia)
Polyps
Endometriosis
Adenomyosis
(painful, cyclical)
PID
(discharge, pain +/- fever)
Causes of abnormal mestruation
Reproductive tract:
- pregnancy related
- uterine lesions
- cervical lesions
- iatrogenic
Systemic:
- coagualopathy
- hypothyroidism
- cirrhosis
Dysfunctional uterine bleeding (DUB)
Cervical causes of abnormal bleeding
Generally present with PCB
- erosion (aka ectropion)
- trauma
- cervicitis (more likely discharge)
- polyp
- cancer
Pregnancy related causes of abnormal bleeding
hCG is first line investigation of abnormal bleeding
Miscarriage (irregular, IMB)
- cramping pain
Ectopic (irregular, IMB)
- severe pain and tenderness
Gestational trophoblastic disease
Implantation bleeding (spotting)
Investigation of abnormal vaginal bleeding
Bloods
- anaemia?
- clotting probs?
- TFT
Pregnancy test
VE
- lower genital tract / cervical lesion?
- swab
TV TA US
- growth in uterus?
- if > 4mm inc thickness do hysteroscopy and biopsy
Menorrhagia differentials
DFPTC
DUB (no organic pathology) Fibroids Polyp Thyroid Clot: von Willebrand's
(IMB: cancer, pregnancy, contracep; PCB: cervix; PMB: A.V., cancer; pain: endometriosis)
What to ask about in menorrhagia history
Cycle pattern (duration of bleed) Number towels/tampons used per day Other bleeding (IMB, PCB) Impact on lifestyle Duration of problem
Other symptoms, especially: Dysparenunia Pain Bleeding from other sites Discharge Thyroid sx
Obstetrics Contraceptive history Smear PGH (inc surgery) Sexual history
Drugs
Smoking
Investigations menorrhagia
Abdominal and bimanual pelvic exam
FBC to assess need iron
TFT to see if hypothyroid
Consider clotting studies
If suspect cancer or fail to respond to treatment after 3 months:
- TV TA US (more than 4mm growth)
- endometrial biopsy with hysteroscopy if USS abnormal
Management of menorrhagia
No structural probs (or only small fibroids): medical
- Marena IUD
- COCP
- Tranexamic acid
- pro uterine haemostasis (antifibrinolytic)
- Mefenamic acid (if pain)
- nsaid (anti prostoglandin)
Structural problems present: Surgery
- GnRH agonist prior to surgery (need ‘add back’ hormones if >6month)
- ablation
- embolisation (fibroid)
- myomectomy (fibroid)
- hysterectomy
Fibroids
intramural (70%), subserosal, submucosal
Affect 20% by 40yrs - reproductive years Mainly asymptomatic Presentation - menorrhagia - pelvic mass/bloating - infertility - urinary Sx - frequency, retention - dystocia in labour Red degeneration in pregnancy - pain fever vomiting
Management of fibroids
Surgery: hysterectomy, myomectomy, uterine artery embolisation
Medical: GnRH agonists
Treatment menorrhagia compatible w conception
Antifibrinolytics- eg tranexamic acid.
- CI thromboembolytic disease
NSAID (anti prostaglandins) - mefenamic acid.
- helpful if dysmenorrhea also.
- CI peptic ulcers
Both taken during bleeding
Treat menorrhagia with no poss of conception
Danazol
- expensive and effective however
- associated with androgenic side effects,
- inhibits ovulation but unreliably so not lisenced as contraceptive
COCP
- effective, CI in some women
Mirena coil
- very effective, reduce fibroid volume, similar satisfaction ratings to hysterectomy
- SE: irregular menses for first 3-6 months after insertion
Surgical treatment- if family complete.
- endometrial resection by laser, diathermy, ablation
- embolisation of fibroid
- hysterectomy
Primary amenorrhoea details
Absence of menstruation by 16 years
1-2%
Familial?
Hypothalamic dysfunction (stress, wt, exercise) 30%
- low FSH
- T: the Pill
Gonadal failure: Turner’s Syndrome (45 xo) 35%
- high FSH
- streak gonads (fibrous tissue instead of ovary)
- no breast development
- T: the Pill
Anatomical outflow obstruction
- vaginal agenesis
- imperforate hymen
- transverse vaginal septum
Testicular feminization syndrome
- 46 XY (genetically male) but insensitive to androgens
- so male genitalia never develops (testes never descend)
- female phenotype
Causes primary amenorrhoea
Familial late puberty
Hypothalamic
- stress, exercise, weight loss
Has she got normal external secondary sexual characteristics?
Are internal genitalia normal?
Turners syndrome
- Webbed neck, shield chest, short, cubitus valgus
Testicular feminization
Reproductive outflow tract disorders
- imperforate hymen
Causes secondary amenorrhoea
Pregnancy
Hypothalamic
- exercise, weight loss, stress,
Pituitary disorders
- adenomas eg prolactinoma,
- pituitary necrosis eg Sheehan’s syndrome (rare)
Ovarian causes
- PCOS (US:cysts, high LH, low FSH)
- tumours
- ovarian failure (premature menopause)
Secondary amenorrhoea details
Absence of menstruation for >6months after prev regular cycles
Pregnancy
Hypothalamic 35%
- stress, weight, exercise
- treat with the Pill to increase oestrogen
PCOS 30%
- low FSH, high LH
- assoc w obesity, hirsuitism, acne, infertility
- treat with the Pill to increase suppress LH, raise oestrogen
—–with these two causes you get withdrawal bleed after a week of progestin, showing normal uterine lining (unless severe hypothalamic dysfunction)
Pituitary disease
- tumour or apoplexy causing low Gn’s
- prolactin (macroadenoma)
- Sheehan’s
Premature ovarian failure (like menopause)
- FSH levels high
- HRT
Secondary amenorrhoea - history
Full menstrual history
- menarche
- normal cycle, previous probs
Could you be pregnant?
- sexually active?
- contraception (progesterone can cause amenorrhea)
Noticed weight loss or gain?
- intentional?
Tumour symptoms (galactorrhoe, headache)
PCOS symptoms
- hair growth, acne, weight gain
Stress, emotional issues
Rest of gynae history
- family history of gynae probs
- prev gynae history
- smear
- obstetric
- drugs
- smoking
Amenorrhoea investigations
Pregnancy test
Serum LH + testosterone (increased in PCOS)
FSH (very high in premature menopause)
Prolactin (increased by stress, prolactinomas, some drugs)
can give progesterone withdrawal test if further investigation required
Causes dysmenorrhoea and pelvic pain
Primary Endometriosis/adenomyosis Fibroids (menorr) PID Ovarian disease
Primary painful periods
- no organic pathology
- excessive prostaglandins > painful uterine contractions
- ‘pelvic congestion’
- manage in primary care - mefenemic acid
Not settled? > Secondary
US may show:
- fibroids
- adenomyosis
- ovarian cyst
Infection screen
- PID
Finally, laparoscopy may be needed to find
- endometriosis
Treatment dysmenorrhoea
NSAIDs- mefenamic acid, naproxen, ibuprofen (vs prostaglandin synthesis)
COCP
Mirena coil
Ovarian cyst and torsion presentation
intermittent, unilateral dull ache
w/ intercourse
torsion:
sudden unilateral lower abdo pain
may be brought on by exercise
w/ nausea and vom
ovarian cyst types
physiological cysts - common in reprod age
- follicular (common)
- corpus luteum
benign tumours
germ line - dermoid cyst = teratoma
- common under 30 yrs
epithelial - serous or mucinous cystadenoma
stromal - fibroma
(Meigs = fibroma + ascites + pl eff)
Causes postcoital bleeding
Cervical
- trauma
- polyps
- carcinoma
- cervicitis (w discharge)
- erosion
Vaginal cancer/infection
Features of polycystic ovarian syndrome (PCOS)
- Hypo-androgenism, oligo-ovulation, polycystic ovaries
- Acne, hirsutism, obesity >40% clinically obese
- Acanthosis nigricans (darkened skin on neck, skin flexures)
- Oligomenorrhoea/amenorrhoea -from anovulation
Subfertility (75% difficulty conceiving)
Recurrent miscarriage
Long term risks PCOS
Ovarian and endometrial cancer risk
- unopposed oestrogen
Diabetes, especially if also obese
MI, stroke, IHD
Hypertension
Diagnosis PCOS
Diagnosis of exclusion Usually have increased LH:FSH Increased testosterone Increased fasting insulin 5 or more ovarian follicles on USS
Treatment PCOS
Detect + treat diabetes, hypertension, hyperlipidaemia
Encourage weight loss + exercise
Clomifene if trying to conceive (induces ovulation)
Combined pill if not trying to conceive- will control bleeding + reduce risk of unopposed oestrogen on endometrium (risk endometrial carcinoma)
Treat hirsutism with cyproterone acetate (androgen receptor antagonist)- in Dianette COCP
Causes postmenopausal bleeding
Endometrial carcinoma (PMB is endometrial carcinoma until proven otherwise) - unopposed estrogen?
Endometrial hyperplasia, or polyps
Cervical malignancy
- esp post- coital
Atrophic vaginitis
- spotting
- assoc w dryness, dyspareunia
Investigations postmenopausal bleeding
Full Hx, pelvic exam, cervical smear
USS- if endometrial thickness <3mm endometrial carcinoma risk is low
if >3mm (or 5mm if on HRT) – endometrial biopsy with/without hysteroscopy
Endometrial cancer presentation
Generally post menopausal women (75%, with 20% between 40yrs and menopause)
PMB (= endometrial cancer until proved otherwise)
- initially slight, infrequent
75% present at stage one - confined to uterus
Pain/discomfort is late feature
Premenopausal women get IMB or irregular periods
Endometrial cancer risk factors
Nulliparous/low parity
Late menopause
(COCP is protective)
FH - ovarian/breast/colon
Diabetes
PCOS
Obesity
Endometrial hyperplasia
Endometrial cancer prognosis
If confined to uterus (stage 1) = 80% 5 year survival
Endometrial hyperplasia
Due to prolonged unopposed oestrogen stimulation
With or without ‘cytological atypia’
- without is benign, with has 20% risk of progression
Presentation: abnormal uterine bleeding (esp PMB)
Bacterial vaginosis
Non puritic
Fishy white/grey vaginal discharge - homogenous
Discharge will raise ph of vagina >4.5
Clue cells
If pregnant - risk of prem labour/miscarriage
Treatment bacterial vaginosis
Metronidazole 400mg bd 7 days
Candidiasis
Intense puritis
Vulvovaginal erythema
Non smelly thick ‘cottage cheese’ like discharge
pH<4.5
Treatment candidiasis
Topical clotrimazole or oral fluconazole
Trichomoniasis
Protozoan infection - seen on wet film (not hvs)
Std
Profuse smelly discharge - green/yellow
May get post coital bleeding
Strawberry cervix (red petechiae), erythema
pH>4.5
Treatment trichimoiasis
Metronidazole 400bd 7days
Gonorrhoea
Profuse odourless creamy discharge
Non irritating
diplococcus
Can progress to acute salpingitis or disseminated infection - fever, pelvic pain..
Treatment gonorrhoea
Ceftriaxone 500mg im and 1g azithro
Or cefixime 400mg po and 1g azithro
(Single doses)
Chlamydia
Most common std Often asymptomatic Purulent mucoid discharge Pcb Vaginitis
In pregnancy - risk of neonatal conjunctivitis
Diag - endocervical swab
Treatment chlamydia
Oral doxycycline 100mg bd 7 days
or azithromycin 1g (single dose)
partner notification last 6 months (treat then test)
-unless symptomatic man: last 4 weeks
Genital warts
Caused by hpv (usually 6, 11)
Warts may be dotted about or confluent
Treatment genital warts
Cryotherapy
Syphilis
Systemic disease
Painless solitary genital ulcer plus rash
Treatment syphilis
IM benzathine penicillin
Genital herpes
Herpes simplex virus type 1 or 2 (most type 2)
Genital ulcers
Burning pain and puritis
Latent and active phases
Treatment genital herpes
Acyclovir
STI counselling
Ask about sexual partners - need to contact
Talk about risk of PID and long term sequelae
Risk of TOA (tubuloovarian abcess)
Unopposed oestrogen
Obesity
- due to conversion of androgens
Tamoxifen
- has oestrogenic effect on uterus
PCOS
Oestrogen HRT (without progestins)
Uterine sarcoma
5% of uterine cancers
Rare, aggressive
Cervical cancer: risk & epidemiology
Sexually active women
Mean age 52 years
Higher risk: early first coitus, numerous partners.
HPV is causative agent in majority of cases (16,18,39)
SMOKING
Cervical cancer screening
25 to 49 (every 3 years)
50 to 64 (every 5 years)
Look for dyskaryosis or CIN (abnormal cells)
Refer for colposcopy +/- biopsy
HPV and cervical cancer
Look out for symptoms
- irreg bleeding (especially post coital), pain, discomfort
Prevention: 2 measures
- vaccinate vs HPV (6,11,16,18)
- screen all women from 25 (earlier too many false positives)
Cervical intraepithelial neoplasia - CIN
Precursor to cancer Starts at transitional zone Detected on Pap smear film Stage 1 - 3 Refer for colposcopy and biopsy
CIN treatment
BORDELINE
- repeat smear in 6 months
- or test sample for hpv 16,18,39
DYSKARIOSIS
Loop electrosurgical excision procedure (LEEP)
- removes affected tissue
Cryotherapy/ ablation may also be used to destroy lesion