Gynaecology 1 Flashcards
What days is menstruation during the menstrual cycle?
1-4
What is the first half of the menstrual cycle called? What days is it? What hormone predominates?
Proliferative (follicular) phase days 5-13
Oestrogen predominates to thicken the endometrium
FH > LSH
What hormonal change marks oocyte release from a follicle and what day is this?
LH surge on 14 days (matches up with oestrogen bump)
What is the second half of the menstrual cycle called? What days is it? What hormone predominates?
Proliferative (luteal) phase days 14-28
Progesterone dominates to form a secretory endometrium
LH > FSH relatively
Define irregular periods?
Outside normal range of 23-35 days, variability of >7 days between shortest and longest
What is oligomenorrhoea?
Infrequent periods, between 35 days - 6m
What is primary amenorrhea?
Periods never start by age 16
What is secondary amenorrhea?
Periods stop for > 6m
What is Postmenopausal bleeding?
Bleeding that occurs >1 year after LMP
What is the objective definition of menorrhagia but what is normally considered?
> 80ml blood loss in one normal period, which could lead to an IDA
Normally just when heavy enough to interfere with everyday life
Most common causes of menorrhagia?
Idiopathic
Fibroids
Polyps
What does tenderness when examining for menorrhagia indicate?
More likely adenomyosis
3 most appropriate investigations for menorrhagia?
TVUSS +/- endometrial pipelle biopsy +/- hysteroscopy
First line management for menorrhagia if patient not wanting to get pregnant?
Mirena coil IUS
What drugs are second line for menorrhagia after IUS/if fertility desired?
Tranexamic acid, an antifibrinolytic
NSAIDs
What is third line management for menorrhagia?
Progestogens to induce artificial amenorrhea
GnRH analogues to induce artificial menopause
If fail, surgery
Most common causes of irregular periods and IMB?
Fibroids, adenomyosis
Polyps
Ovarian cysts
PID
What are more likely causes of IMB and irregular menses in older women?
Endometrial, ovarian and cervical cancer
What drugs can be given to induce artificial amenorrhea and are therefore used for menorrhagia, IMB, irregular menses and occasionally dysmenorrhea?
Progestogens and CoCP
First line management for menstrual disturbance when fertility not required?
IUS or CoCP
Physiological causes of amenorrhea?
Pregnancy
Lactation
6 areas of causes of amenorrhea/oligomenorrhoea?
Drugs e.g. Progestogens, GnRH agonists, antipsychotics Hypothalamic hypogonadism Pituitary - hyperprolactinaemia Adrenals/thyroid - hypothyroidism Ovary - PCOS, prem menopause, Turners Outflow tract disturbance
3 most common causes of amenorrhea/oligomenorrhoea? Which most commonly causes oligomenorrhoea?
PCOS - normally oligo
Premature menopause
Hyperprolactinaemia
What can hypothalamic hypogonadism be caused by?
Losing loads of weight, anorexia, exercise
Is PCB ever ‘normal’? What are the most common causes?
No
Most commonly cervical e.g. Ectropion, polyps, Cancer
Can be atrophic vaginitis in older women
Why does dysmenorrhea happen and what are the 2 types?
High prostaglandins causing contraction and uterine ischaemia
Primary = no organic cause
Secondary = secondary to pelvic pathology
Characteristics of primary dysmenorrhea?
No organic cause
Normally at start of menstruation
Often responds to NSAIDs or ovulatory suppression (COCP)
Most common causes of secondary dysmenorrhea?
Fibroids
Adenomyosis, endometriosis
PID
Characteristics of secondary dysmenorrhea?
Often precedes menstruation
Commonly coexists with deep dyspareunia, menorrhagia, irregular menses
Requires PUS and laparoscopy
What is the premenstrual syndrome?
Sx worsening in luteal phase of cycle, resolve by end of menstruation
Tension, irritability, aggression, depression
IBS like symptoms, breast pain
Management of premenstrual syndrome?
SSRIs (duloxetine) are useful
Cycle ablation - COCP, GnRH analogues with add back HRT
What is the relationship between fibroids and adenomyosis?
Fibroids (leiomyomata) are benign myometrial tumours
Adenomyosis is endometriosis which deposits within the myometrium
Both can cause menorrhagia, irregular/IMB, dysmenorrhea
What effect does progesterone have on the endometrium and how does it relate to menstruation?
Causes gland swelling and vascularisation
Falls at the end of the cycle causing decrease in blood supply, ischaemia and menstruation
What do fibroids depend on for growth and therefore what is protective against them?
Oestrogen and progesterone (so common just pre-menopause and normally regress during pregnancy, post-menopause)
Pregnancy, COCP, Progestogens are protective
3 types of fibroids and how do they relate to polyps?
Subserous fibroids Intramural fibroids Submucosal fibroids Intracavity polyps Subserous polyps
What polyps and fibroids are related in terms of location and symptomlogy?
Intracavity polyps and submucosal fibroids both push into uterine cavity
Subserous fibroids and subserous polyps both push out of uterus and make the outside of it bumpy
When can fibroids grow during pregnancy and what problems can arise?
Can grow mid-pregnancy second trimester
-> preterm labour, malpresentation, transverse lie, PPH
Red degeneration (severe pain)
Pedunculated fibroid torsion
What is the cancerous change that arises from fibroids?
Leiomyosarcoma
Why can Hb be high with fibroids?
They can secrete erythropoietin
Investigations for fibroids?
TVUS +/- MRI +/- laparoscopy
Medical management of fibroids if not trying to conceive?
GnRH agonists to induce temporary menopause with add back HRT
Alternative surgical management for fibroids if wanting to preserve fertility?
Pretreatment GnRH agonists followed by hysteroscopy and TCRF for submucosal/intracavity polyp
Myomectomy - open laparotomy or laparoscopic for intramural/subserous
What is umbilical artery embolization UAE used for?
Fibroids shrinkage in those that don’t want kids
What can haematometra occur as a result of?
Fibrosis post-endometrial resection, cone biopsy
Carcinoma
Congenital malformation or imperforate hymen (1* amenorrhea)
What is the commonest genital tract cancer in women?
Endometrial cancer
Who does endometrial cancer occur most commonly in?
Older women > 60
What histological type are the majority of endometrial cancers?
Adenocarcinoma of columnar endometrial gland cells
What is the major risk factor for endometrial cancer and what 2 types can this broadly be split into?
Unopposed oestrogen/high oestrogen:prog ratio
Split into exogenous and endogenous oestrogen excess
Exogenous oestrogen RFs for endometrial cancer?
Tamoxifen for breast cancer
Unopposed oestrogen therapy
Endogenous oestrogen sources as risk factors for endometrial cancer?
Obesity (androgen->oestrogen conversion) PCOS Nulliparity Late menopause Oestrogen secreting (ovarian) tumours
What is Lynch type II syndrome?
Hereditary Non-Polyposis Colorectal Cancer
Risks of colorectal, endometrial and ovarian cancer
What is the premalignant disease for endometrial cancer?
Endometrial hyperplasia with atypia
Requires hysterectomy if possible
What is the biggest presenting picture for endometrial cancer?
PMB - increasing likelihood of cancer with age
If pre-menopausal - rare but IMB/irregular menses or oligomenorrhoea
What cervical pathology may coexist with endometrial cancer?
Cervical Glandular Intraepithelial Neoplasia CGIN
How is FIGO staging for endometrial cancer carried out?
USS + endometrial pipelle biopsy +/- hysteroscopy
Staging can only be done post-hysterectomy
Stages for endometrial cancer?
Stage 1 - uterus only (75% at presentation)
Stage 2 - uterus and cervix
Stage 3 - invasive through uterus into adnexae, vagina, LNs
Stage 4 - bowel or bladder spread or distant mets
Stage 1 management for endometrial cancer?
H+BSO
If turns out subsequently to be stage 3 -> ?radiotherapy
Recurrence for endometrial cancer?
Most commonly vaginal vault - VGIN
Moist Smelly Stuff is Gynae Basics of gynae history?
Menstrual questions Sexual Hx Smear Hx Genitourinary Sx incl discharge Bowel Sx
What is cervical ectropion?
Visible endocervical columnar epithelium as redness around external os
More common during pregnancy, COCP
Other than asymptomatic, how can cervical ectropion present?
Discharge
Post-coital bleeding
Management of cervical ectropion?
Cryotherapy after exclusion of carcinoma by smear/colposcopy
What is chronic cervicitis?
A common cause of discharge, often due to chronic STI of cervical ectropion
What are cervical polyps?
Benign endocervical epithelial tumours most common in older women
Apart from asymptomatic, how can cervical polyps present?
Post-coital bleeding, Intermenstrual bleeding
Management of cervical polyps?
Avulsion + histological analysis
What are Nabothian follicles?
Columnar cell secretions trapped under squamous epithelium leading to white/opaque swellings in ectocervix. Commonly asymptomatic
What is the most common histological type of cervical cancer?
Squamous cell carcinoma
What are CIN I-III and what do they represent?
Dysplasia of cervical intraepithelial cells; I is atypical cells at lower 1/3 of epithelium only, II is 2/3 and III is full thickness
What is another term form CIN III and how does it progress to malignant disease?
Carcinoma in situ -> invasion through basement membrane