Adenomyosis and Leiomyomas Flashcards
What is another term for leiomyomas?
Fibroids
What are fibroids?
Benign smooth muscle tumours originating from myometrium of uterus.
Aetiology of fibroids?
Exact cause is unknown
Although oestrogen and progesterone appear to promote fibroid growth
Fibroids contain more oestrogen and progesterone receptors than normal uterine muscle cells.
Symptoms of fibroids?
- Majority is asymptomatic
- Pressure symptoms +/- abdominal distension (includes urinary frequency or chronic retention).
- Heavy menstrual bleeding
- Subfertility
- Acute pelvic pain (rare)
Signs of fibroids?
A solid mass or enlarged uterus may be palpable on abdominal or bimanual examination
Uterus usually non-tender
Investigations for fibroids?
Imaging:
- Pelvic US
- MRI (rarely used unless sarcoma is suspected)
Medical management of fibroids?
Tranexamic acid (antifibrinolytic)
Mefanamic acid (NSAID)
Hormonal contraceptives (i.e. Mirena coil)
GnRH analogues
Selective progesterone receptor modulators
Surgical management of fibroids?
Hysteroscopy and transcervical resection of fibroid (TCRF)
Myomectomy (removal of fibroid)
Uterine artery embolisation
Hysterectomy
When is myomectomy (removal of fibroid) offered to patients?
When the fibroid exceeds 3cm in size. Removal of the fibroid through surgery may be offered.
What medication can be provided to patients weeks before a myomectomy?
GnRH analogues such as goserelin
Why are GnRH analogues such as goserelin given at the interval before myomectomy?
Can be given prior to surgery to manage bleeding in anaemic women as a result of fibroids.
Can also be used to shrink the size of the fibroid, aiding with surgery.
What is first line treatment for women with fibroids smaller than 3cm and not causing uterine cavity distortion?
Levonorgestrel-releasing intrauterine system (IUS) is used for first line management in women with fibroids smaller than 3cm not causing uterine distortion.
This only applies if patient is not looking to conceive.
What can happen to fibroids in the second and third trimester of pregnancy?
Fibroids are oestrogen sensitive (grow in the presence of oestrogen), therefore in the second and third trimesters of pregnancy, fibroids can rapidly enlarge and outgrow its blood supply.
Can lead to ischaemia and necrosis of the fibroid, this can be known as “red degeneration”.
What is adenomyosis?
The presence of functional endometrial tissue within the myometrium of the uterus.
Aetiology of adenomyosis?
Thought to occur when endometrium communicates with myometrium follwoing uterine damage. May occur in association with:
- Pregnancy and childbirth
- C-section
- Uterine surgery (e.g. endometrial curettage)
- Surgical management of miscarriage or termination of pregnancy