Gynaecology Flashcards
What are fibroids?
Fibroids AKA uterine leiomyomas = benign tumours of smooth muscle of the uterus
* Affect 40-60% women in later reproductive years - more common in black women
* Fibroids = oestrogen sensitive (they grow in response to oestorgen)
Types of fibroids
What are the 4 types?
- Intramural = within the myometrium - as they grow they change the shape + distort the uterus
- Subserosal = Just below the outer layer of the uterus - grow large outwards + filling the abdominal cavity
- Submuscosal = just below the endometrium
- Pedunculated = on a stalk
How do fibroids present?
Symptoms:
* Heavy periods (menorrhagia): particularly submucosal and intramural
* Prolonged menstruation (more than 7 days)
* Pelvic pain (dysmenorrhoea): particularly submucosal + intramural
* Pain during or after sex (dyspareunia)
* Bleeding between peroids (intermenstrual bleeding)
* Due to pelvic pressure or fullness: Urinary frequency or retention + Bloating or constipation
Signs:
* Pelvic examination: firm, enlarged, and irregularly shaped non-tender uterus = characteristic
* Abdominal examination: a central irregular mass may be found in cases of large fibroids
* Reduced fertility
A 43-year-old lady presents to her GP with a 6-month history of worsening menorrhagia. She also reports occasional intermenstrual bleeding. She has been trying to conceive for the last 3 years with no success. Underlying diagnosis?
Uterine fibroids
What examination do you do when you suspect uterine fibroids?
Abdominal + bimanual examination → a palpable pelvic mass OR an enlarged firm non-tender uterus
Ix for uterine fibroids
A combination of a history + abdominal + bimanual examination = usually significantly aid diagnosis.
* Hysteroscopy for submucosal fibroids → presenting with heavy menstrual bleeding
* Ultrasound (transabdominal + transvaginal) - transvaginal = diagnostic
* FBC (anaemia or polycythaemia) - fibroids can also secrete erythropoietin which may cause polycythaemia
What is the medical + surgical management for uterine fibroids less than 3cm?
Medical management (same as heavy menstrual bleeding):
* First line: Mirena coil (must be no distrortoin of uetrus)
* Symptomatic management (NSAIDs + tranexamic acid)
* COCP
* Cyclical oral progestogens
Surgical:
* Endometrial abalation
* Resection of submucosal fibroids during hysteroscopy
* Hysterectomy
Medical and surgical management of fibroids more than 3cm (referral to gynaecology)
Medical:
* Symptomatic management (NSAIDs + tranexamic acid)
* Mirena coil (depending on the size + shape of the fibroids + uterus
* COCP
* Cyclical oral progestogen
Surgical:
* Uterine artery embolisation
* Myomectomy
* Hysterectomy
What drugs are used to reduce the size of fibroids before surgery?
GnRH agonists = goserelin (Zoladex) or leuprorelin (Prostap)
They reduce the amount of oestrogen maintaining the fibroid (used short-term)
What are the surgical options for fibroids?
- Myomectomy → removing the fibroid (laproscopic or laprotomy) - only treatment to improve fertility
- Endometrial ablation
- Hysterectomy
Complications of fibroids
- Heavy menstrual bleeding → often with iron deficiency anaemia
- Reduced fertility
- Pregnancy complications → miscarriages, premature labour and obstructive delivery
- Constipation
- Urinary outflow obstruction + urinary tract infections
- Red degeneration of the fibroid
- Torsion of the fibroid, usually affecting pedunculated fibroids
- Malignant change to a leiomyosarcoma is very rare (<1%)
What is red degeneration of fibroids?
Rapid growth of a fibroid → leading to the outgrowth of its blood supply → causing ischaemia + bleeding - due to surge of sex hormones, particularly during pregnancy
How does red degeneration of fibroids present amd treated?
- Severe abdominal pain
- Low-grade fever
- Tachycardia
- Vomiting
Management: Supportive (rest, fluids, analgesia)
A pregnant woman with a history of fibroids presents with severe abdominal pain and a low-grade fever. Diagnosis?
Red degeneration
What is Asherman’s syndrome?
Asherman’s syndrome = adhesions (aka synechiae) form within the uterus - following damage to the uterus
What is Asherman’s syndrome caused by?
After:
* A pregnancy-related dilatation + curettage procedure (e.g. treatment of retained products conception (removing placental tissue left behind after birth))
* Uterine surgery (e.g. myomectomy)
* Several pelvic infections (e.g. endometritis)
Why can endometrial curettage cause Asherman’s syndrome?
- Endometrial curettage (scraping) = can damage the basal layer of the endometrium.
- This damaged tissue may heal abnormally, creating scar tissue (adhesions) connecting areas of the uterus that are generally not connected.
- There may be adhesions binding the uterine walls together, or within the endocervix, sealing it shut.
- These adhesions = form physical obstructions → distort the pelvic organs → resulting in** menstruation abnormalities, infertility, recurrant miscarriages**
Are asymptomatic adhesions classified as Asherman’s syndrome?
No
A woman that has had recent dilatation + curettage after the birth of her child presents with significantly lighter periods that are painful. Underlying diagnosis?
Asherman’s syndrome
Who does Asherman’s syndrome present in and how?
Presents following recent (basically anything that can damage the uterus):
* Dilatation + curettage
* Uterine surgery
* Endometritis
Presents with (basically everything works less):
* Secondary amenorrhoea (absent periods)
* Significantly lighter periods
* Dysmenorrhoea (painful periods)
* Maybe infertility
Ix for Asherman’s syndrome
- Gold standard: Hysteroscopy (can involve dissection + treatment of adhesions)
- Hysterosalpingography (contrast injected + x-rayed)
- Sonohysterography (uterus filled with fluid + pelvic USS)
- MRI scan
What is the management for Asherman’s syndrome?
Dissecting the adhesions during hysteroscopy
Reoccurrence of the adhesions after treatment is common
What is endometriosis?
Where there is ectopic endometrial tissue outside the uterus
What is a lump of endometrial tissue outside of the uterus called?
An endometrioma
What is an endometrioma in the ovaries called?
‘Chocolate cysts’
What is adenomyosis?
Endometrial tissue within the myometrium (of the uterus)
What is the cause of endometriosis?
No known cause
What is the main theory that underpins endometriosis?
Retrograde menstruation
The endometrial tissue flows backwards through the fallopian tubes and out into the pelvis + peritoneal cavity during menstruation.
The endometrial tissue then seeds itself around the pelvis + peritoneal cavity
What are the other theories behind endometriosis?
- Embryonic cells destined to become endometrial tissue may remain in areas outside the uterus during the development of the fetus, and later develop into ectopic endometrial tissue.
- There may be spread of endometrial cells through the lymphatic system, in a similar way to the spread of cancer.
- Cells outside the uterus somehow change, in a process called metaplasia, from typical cells of that organ into endometrial cells.
Why does cyclical abdominal or pelvic pain occur during menstruation in endometriosis?
- Cells of endometrial tissue outside the uterus = respond to hormones (same way as endometrial lining)
- During menstruation, as the endometrial tissue in the uterus sheds its lining and bleeds, the same thing happens in the endometrial tissue elsewhere in the body.
- This causes irritation + inflammation of the tissues around the site of endometriosis
- → results in cyclical, dull, heavy or burning pain
Why can patients with endometriosis present with blood in urine and stools during menstruation?
Deposits of endometriosis in the bladder + bowel
(Bleed during period)
Why can adhesions occur in endometriosis?
- Localised bleeding + inflammation = leads to adhesions
- Inflammation = causes damage → development of scar tissue → binds organs together
- Adhesions = cause chronic non-cyclical pain → that can be sharp, stabbing, or pulling - with associated nausea
What causes the cyclical and non-cyclical pain in endometriosis?
- Endometriomas → cyclical, dull, heavy or dull burning pain (during menstruation)
- Adhesions → chronic, non-cyclical pain (sharp, stabbing, pulling) + associated nausea
How can endometriosis lead to reduced fertility?
Adhesions around ovaries + fallopian tubes → blocking the release of eggs or kinking the fallopian tubes → obstructing the route to the uterus
Endometriomas in the ovaries = may also damage eggs or prevent effective ovulation
What are the symptoms of endometriosis?
- Cyclical abdominal or pelvic pain
- Deep dyspareunia (pain on deep sexual intercourse)
- Dysmenorrhoea (painful periods)
- Infertility
- Cyclical bleeding from other sites, such as haematuria
Cyclical symptoms - relating to other areas:
* Urinary symptoms
* Bowel symptoms
What are the signs on examination that you will see for endometriosis?
- Endometrial tissue visible in the vagina on speculum examination - particularly in the posterior fornix
- A fixed cervix - bimanual examination
- Tenderness in the vagina, cervix and adnexa
Ix for endometriosis
- Pelvic ultrasound
- Gold standard: Laproscopic surgery
- Definitive - biopsy of lesions during laproscopy
What is the staging system for endometriosos?
The American Society of Reproductive Medicine (ASRM):
* Stage 1: Small superficial lesions
* Stage 2: Mild, but deeper lesions than stage 1
* Stage 3: Deeper lesions, with lesions on the ovaries and mild adhesions
* Stage 4: Deep and large lesions affecting the ovaries with extensive adhesions
Management for endometriosis
Analgesia: NSAIDs + paracetamol (first line)
Hormonal management:
* Combined oral contractive pill, which can be used back to back without a pill-free period if helpful
* Progesterone only pill
* Mirena coil
Surgical management:
* Laproscopic surgery (excise or ablate the endometrial tissue + remove adhesions (adhesiolysis)
* Hysterectomy + bilateral salpingo-opherectomy
- Laproscopic treatment → improve fertility
- Hormonal therapies → improve symptoms
- GnRH analogues (goserelin): to indice a ‘pseudomenopause’
What is adenomyosis?
Adenomyosis = endometrial tissue is inside the myometrium
Who does adenomyosis occur in?
- Older women
- Multiparous women
- Occurs alone, or alongside endometriosis or fibroids
Is adenomyosis hormone-dependent?
Adenomyosis = hormone-dependent
* Symptoms = resolve after menopause (similary to endometriosis + fibroids)
How does adenomyosis present?
- Asymptomatic (30%)
- Painful periods (dysmenorrhoea)
- Heavy periods (menorrhagia)
- Pain during intercourse (dyspareunia)
- Infertility or pregnancy-related complications
What will you find on examination of a woman with adenomyosis?
- Enlarged + tender uterus
- (More soft than a uterus containing fibroids)
Ix for adenomyosis
First line: Transvaginal USS
* Alternative: MRI + transabdominal USS where transvaginal USS is not available
Gold standard: Histological examination of uterus after hysterectomy (not suitable)
Mx for adenomyosis (who does not want contraception)
Same for heavy menstrual bleeding
* Tranexamic acid when there is no associated pain (antifibrinolytic – reduces bleeding)
* Mefenamic acid when there is associated pain (NSAID – reduces bleeding and pain)
Mx for adenomyosis
(contraception is wanted or acceptable)
- First line: Mirena coil
- COCP
- Cyclical oral progesterons
Progesterone only medications such as the pill, implant or depot injection may also be helpful.
Specialist Mx for adenomyosis
- GnRH analogues → induce a menopause-like state
- Endometrial ablation
- Uterine artery embolisation
- Hysterectomy
Pregnancy complications associated with adenomyosis
- Infertility
- Miscarriage
- Preterm birth
- Small for gestational age
- Preterm premature rupture of membranes
- Malpresentation
- Need for caesarean section
- Postpartum haemorrhage
Define anovulation
Absence of ovulation
Define oligoovulation
Irregular, infrequent ovulation
Define amenorrhoea
Absence of menstrual periods
Define oligomennorrhoea
Irregular, infrequent menstrual periods
Define androgens
Male sex hormones (e.g. testosterone)
Define hyperandrogenism
Refers to the effects of high levels of androgens
Define hirsutism
Refers to the growth of thick dark hair, often in a male pattern, for example, male pattern facial hair
Define insulin resistance
Lack of response to insulin - resulting in high blood sugar levels
What is the criteria for diagnosing polycystic ovarian syndrome?
Rotterdam Criteria: 2 of the 3
* Oligoovulation or anovulation → presenting with irregular or absent menstrual periods
* Hyperandrogenism → presenting with hirsutism + acne
* Polycystic ovaries on USS (or ovarian volume > 10cm3)
Name the features of polycystic ovarian syndrome
Head to toe:
Increased androgens:
* Hair loss in a male pattern
* Acne
* Hirsutism
* Oligomenorrhoea or amenorrhoea
* Infertility
Insulin resistance:
* Obesity (70% patients)
* Acanthosis nigricans (dark velvety patches in creases on neck, groin, armpits)
Complications of polycystic ovarian syndrome
- Insulin resistance and diabetes
- Acanthosis nigricans
- Cardiovascular disease
- Hypercholesterolaemia
- Endometrial hyperplasia and cancer
- Obstructive sleep apnoea
- Depression and anxiety
- Sexual problems
Acanthosis nigricans = thickened, rough skin - typically found in the axilla + elbows. Has a velvety texture. Occurs with insulin resistance
Differential diagnosis of hirsutism
- Medications, such as phenytoin, ciclosporin, corticosteroids, testosterone and anabolic steroids
- Ovarian or adrenal tumours → that secrete androgens
- Cushing’s syndrome
- Congenital adrenal hyperplasia