Chronic pelvic pain/endometriosis Flashcards
Define endometriosis:
The presence of tissue similar to endometrium, outside of the uterus.
Who does endometriosis typically affect?
30-45yo
Nulliparous
1-2% of women
When does endometriosis typically regress and why?
After menopause and in pregnancy.
It is oestrogen dependent
Give 2 common places for endometriosis to exist:
Uterosacral ligament
Behind the ovaries (pelvis side wall)
Give two pathologies associated with/due to endometriosis which could be picked up on USS:
Chocolate cysts (endometrioma)
‘Frozen pelvis’ - endometriosis driven inflammation -> progressive fibrosis + adhesions
What is the thought aetiology of endometriosis?
Retrograde menstruation
Give 5 features of endometriosis:
- Chronic pelvic pain -> cyclical
- Dysmenorrhoea before onset of menstruation
- Deep dyspareunia
- Sub-fertility
- Dyschezia (pain on passing stool) during menses
Give 3 DD of endometriosis:
- Adenomyosis (endometriosis interna)
- CPID (chronic pelvic inflammatory disease
- Chronic pelvic pain
Give 4 investigations which can be performed in the case of suspected endometriosis:
1) Physical examination:
- Vagina: tednerness and thickening behind uterus
- Uterus can be retroverted and immobile (adhesions)
2) Laparoscopy:
- Diagnosis only made after visualisation and biopsy
- active lesions appear as red dots, large raides red vesicles
- Less active - black powder-burn dots
- severe disease: ovarian endometriomas + ^^adhesions
3) Transvaginal USS:
- to exclude ovarian endometriomas
- adenomyosis detection (endometriosis inside myometrium) (MRI better however)
4) MRI +/- intravenous pyelogram (IVP):
- used to detect even peritoneal endometriosis, ureteric, bladder and bowel involvement.
- CA 125 sometimes elevated
Give 4 SE of progestogens:
- Fluid retention
- Weight Gain
- Erratic bleeding
- Premenstrual syndrome-like features
What is an intravenous pyelogram (IVP)?
X-ray examination of kidneys, ureters and bladder which used iodinated contrast media which is injected into the veins
What is the medical Rx of endometriosis?
Choose one of the following:
- Analgesia
- COCs
- GnrRH-analogues (down regulates GnRH receptors) + add-back HRT (to maintain bone mineral density)
- IUS - progesterone IUS helps with dysmenorrhoea
What is the issue with medical treatment of endometriosis?
That once medical treatment ends, endometriosis usually recurs.
What are the surgical Rx for endometriosis?
- Laparoscopic laser ablation +/- adhesiolysis
- Hysterectomy +/- BSO -> +HRT if ovaries removed
How does endometriosis relate to fertility?
Severity correlated with sub-fertility.
When can Rx help to improve fertility in endometriosis?
If fallopian tubes affected.
Chocolate cysts can be stripped/drained (ovarian endometriomas)
What is the definition of chronic pelvic pain (CPP)?
Intermittent or constant pain in the lower abdomen for >6 months, not exclusively with menstruation or intercourse.
What Ix should be performed for CPP?
- Transvaginal USS (TVUSS) or MRI
- Full Hx (to r/o non-gynae causes)
- Psychological evaluation
List 5 causes of chronic pelvic pain:
- Endometriosis and adenomyosis (pain varies with menstrual cycles)
- Pelvic/ovarian adhesions
- IBS
- Psychological factors
- Pelvic congestion syndrome (venous congestion in pelvis)
- Myofascial syndrome
If a patient presents with IBS-like CPP, what would you prescribe?
- Antispasmodics (antimuscarinic: hyoscine)
- Analgesia
If a patient presents with cyclical pelvic pain, what Rx would you give?
- COC or GnRH-analgogue with add-back HRT for 3-6months
- If no improvement after 3-6 months, diagnostic laparoscopy
If you suspect a patients CPP if due to psychological origins, what Rx would you provide?
- Counselling and psychotherapy
- Pain management programmes (relaxation techniques, diet, exercise, sex therapy)
- Amitriptyline (tricyclic antidepressant) or gabapentin (inhibits calcium channel receptors which inhibits neurotransmitter release)
When is gabapentin and pregablin typically used for?
- Focal Epilepsy
- Neuropathic pain
- Generalised Anxiety disorders
- Migraine Prophylaxis