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Max Brinsmead PhD FRANZCOG January 2010

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1 Max Brinsmead PhD FRANZCOG January 2010
Uterine Fibroids Max Brinsmead PhD FRANZCOG January 2010

2 Uterine Fibroids Benign tumours (leiomyomata) of uterine smooth muscle
Common – 25% of women in a lifetime Usually multiple Various sizes Genetic predisposition more common in black races More common in the obese Less common in smokers More common in nulliparas Accounts for ~30% of hysterectomies

3 Fibroid Locations Subserous Submucous (~5% of all fibroids) Intramural
Project from the uterus into the peritoneal cavity Sometimes pedunculated Least likely to cause symptoms Submucous (~5% of all fibroids) Project into the uterine cavity Most likely to cause symptoms Intramural Most common Usually multiple

4 Intramural & Submucous Fibroids

5 Subserous Fibroid at Laparoscopy

6 Fibroid Symptoms Mostly asymptomatic Menorrhagia Pressure effects
Heavy regular periods Iron deficiency anaemia Pressure effects Urine frequency Pelvic tumour awareness Difficulty initiating micturition Pain, Infertility & Irregular vaginal bleeding May be due to other pathology

7 Fibroids’ Natural History
Oestrogen-dependent tumours that grow slowly: Whilst cycling premenopausal Probably whilst on COC When taking E2 HRT Will regress with menopause Response to progestin-only contraception is uncertain Malignant change rare <1:1000

8 Investigation of Fibroids
Ultrasound Frequently misdiagnosed with this modality “Multiple small fibroids” is usually irrelevant Heterogenous echolucency is normal in a parous uterus Adenomyosis can look the same Size and location important Can be a “contraction wave” in pregnancy MRI better than CT Imaging Laparoscopy and Hysteroscopy Saline hysterography Useful for pedunculated submucous fibroids

9 Investigating a Submucous Fibroid

10 Investigating a Submucous Fibroid

11 Treatment Options for Fibroids
Hysterectomy If the uterus is >10w size Or symptoms that are due to the fibroids Rapid growth Abdominal or vaginal Myomectomy Best for single fibroid in a young woman ~50% come to hysterectomy within 5 years? Hysteroscopic resection Uterine artery embolisation (UAE) Medical options GnRH analogue Mirena

12 NICE Recommendations for Uterine Fibroids
For patients with heavy menstrual bleeding and fibroids >3 cm size (and especially those with pelvic pain or other symptoms) then… Hysterectomy, Uterine artery embolisation (UAE) and myomectomy should all be offered Myomectomy recommended if fertility is desired Hysteroscopic resection of the entire fibroid with endometrial resection is appropriate if the fibroid (s) are submucous Pre treatment with GnRH analogue for 3 - 4m is worthwhile before hysterectomy and myomectomy Reduces uterine size and makes surgery easier Better HB pre op and less bleeding But GnRH analogues are contraindicated before UAE

13 Fibroids and Infertility
In most women the association is result and not cause It is said that ≈3% of infertility is due to fibroids Most infertility specialists will recommend removal of any fibroid with >50% of its surface in the uterine cavity The results from removal of a single submucous fibroid can be dramatic And there is evidence that removal of intramural fibroids >5 cm diam will enhance fertility with IVF

14 Fibroids and Pregnancy
In most women there is no effect 80% remain unchanged in size Rarely rapid growth and red degeneration Increased risk of bleeding and threatened preterm delivery But most deliver at term Fibroid in the lower segment can interfere with vaginal birth Myomectomy at the time of Caesarean is not wise 30% require emergency hysterectomy

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