- Original Article
- Open Access
Value of hysteroscopy prior to uterine artery embolisation for fibroids: a hospital based retrospective study
© Springer-Verlag 2012
- Received: 12 April 2012
- Accepted: 16 June 2012
- Published: 18 July 2012
This study was undertaken to evaluate the value of routine hysteroscopy prior to uterine artery embolisation (UAE) for symptomatic uterine fibroids. The study design used is hospital-based retrospective study, and the setting is in a large teaching hospital. We analysed the hospital record of 115 women who were scheduled to undergo UAE at our institution between January 2008 and April 2011. All women had outpatient hysteroscopic assessment of uterine cavity prior the decision to carry out UAE. The mean uterine size on palpation was 15.4 (standard deviation (SD) 3.5) weeks gestation equivalent. Hysteroscopy was successfully completed in 112 (97.4 %). In the women who were hysteroscoped, 50 (44.6 %) had no submucous fibroids; 50 (44.6 %) had type II fibroids, and 12 (10.7 %) were found to have type I or 0 fibroids. All 12 women with type 0 or I submucous fibroids were offered hysteroscopic (n = 11) or vaginal (n = 1) myomectomy prior to UAE, but only four agreed. Of these four cases, two cancelled their planned UAE because of symptomatic improvement. The remaining two women, as well as the eight, who declined surgery, underwent UAE. There were no cases of infection, spontaneous expulsion of a fibroid or the need for surgical intervention in this group. This pilot study shows that hysteroscopy prior to UAE changes management in only a small proportion of cases. Selective hysteroscopy, following MRI scanning, may be a more logical protocol to identify women with intracavitary fibroids, who may benefit from hysteroscopic or vaginal myomectomy.
- Uterine artery embolisation
- Submucous fibroids
Uterine myomata are the most commonly found gynaecological benign tumours in women of child-bearing age. Uterine fibroids are often asymptomatic, but in 50 % of women, they can cause heavy bleeding, pain, pressure symptoms, subfertility or difficulties with pregnancy and delivery. The standard treatment for large symptomatic uterine fibroids has been hysterectomy, if women have completed their family, or myomectomy, if uterine conservation is required.
During the mid-1990s, uterine artery embolisation (UAE) was introduced as a minimally invasive uterus-conserving alternative to hysterectomy and myomectomy. Embolising the uterine blood supply had been used earlier to manage post-partum haemorrhage and as treatment of uterine arterio-venous malformations, but it was the desire to reduce intraoperative haemorrhage at open myomectomy by Professor Jacques Ravina, which serendipitously led to the use of UAE as primary management of this common condition once it was realised that the embolisation lets to fibroid shrinkage and symptomatic improvement [1, 2]. Many studies since have confirmed both the benefits and risks of UAE [3, 4].
One of the most feared complications of UAE is post-embolisation uterine sepsis, a complication which may necessitate hysterectomy or, worse, can have a fatal outcome . The risk of post-UAE sepsis has been estimated at 1–2 %, but is greater in presence of submucous fibroids. Spontaneous and painful expulsion of submucous fibroids is another possible complication which affects up to 10 % of patients . Some women experience offensive vaginal discharge and the passage of necrotic tissue for several weeks after UAE [7–9], whilst fibroid expulsion is often spontaneous, some need surgical evacuation of detached submucous fibroids.
Several studies have shown saline infusion sonography as effective, cheaper and less invasive method in diagnosing submucous fibroids [10–12]. Magnetic resonance imaging (MRI) is a standard practice in many units to evaluate the uterus prior to UAE, partly to exclude adenomyosis and pedunculated myomas, but also to evaluate distortion of the uterine cavity by submucous fibroids [13, 14]. The evidence for routine hysteroscopy prior to UAE, to exclude submucous fibroids, is limited.
We have been carrying out routine outpatient hysteroscopy in all women to diagnose and treat submucous fibroids prior to UAE. In this retrospective study, we wanted to assess the value of such a strategy in this patient group and assess if the hysteroscopy had changed the plan of management in those women who were otherwise scheduled to have uterine artery embolisation, for example, this could be scheduling women for hysteroscopic resection of submucous fibroids prior to UAE. Though many units consider MRI as one of the preliminary investigations, very few units carry out routine hysteroscopic assessment of uterine cavity.
We analysed the medical records of 115 women who underwent UAE for uterine fibroids at the Royal Free Hospital between January 2008, when we introduced universal screening of women awaiting UAE by hysteroscopy, and April 2011. All women, who had multiple medium to large uterine fibroids, preferred UAE to surgical management; 80 % of them suffered from menorrhagia, and 20 % had mixed symptoms like menorrhagia, pelvic pain and pressure symptoms.
Patient selection for UAE was carried out by multidisciplinary team, including a gynaecologist and an interventional radiologist. We selected women who had completed their family and or at increased risk from surgery or where UAE was their first choice than surgery. MRI and routine outpatient hysteroscopy were the standard investigations in our unit prior to UAE.
We obtained a written consent prior to all outpatient hysteroscopy procedures. When we compiled the data to study the value of hysteroscopy, we did not obtain hospital ethical committee approval due to (1) the retrospective nature of the study, and (2) the study is looked upon as Service Development.
Hysteroscopy was done in the Outpatient Hysteroscopy Clinic. We used a standard 2.9 mm 30 ° rigid hysteroscope (Karl Storz, Tuttlingen, Germany) with N/saline for uterine distension at a starting pressure of 150 mmHg. A “no touch” (vaginoscopic) technique was used whenever possible . Endometrial sampling with an H Pipelle was taken in selected cases of women with irregular or prolonged bleeding who were >45 years old .
Where indicated, minor outpatient procedures, such as polypectomy, were carried out with mechanical instruments or a mini-resectoscope (Roberts Surgical Healthcare, Kidderminster, England) . Those found to have type 0 or 1 submucous fibroids were offered hysteroscopic or vaginal myomectomy prior to UAE.
A total of 115 women with symptomatic fibroid uterus were scheduled for UAE during the study period. The average age of the group was 44.6 (SD 4.09) years. The mean uterine size on palpation was 15.4 (SD 3.5) weeks gestation equivalent, though the uterine size ranged between 12 and 32 weeks.
Type of fibroid on hysteroscopy
Number of women
Surgical resection of fibroid
Expulsion of fibroid
No submucous fibroids (type II and deeper fibroids)
Type 0 or I
MRI results of 12 women with hysteroscopically detected submucous fibroids were reviewed. In 75 % of women (n = 9), the MRI was suggestive of submucous fibroids. In 25 % of women (n = 3), MRI failed to pick up resectable submucous fibroids.
Of the 12 women with type 0 or I fibroids, 4 agreed to undergo hysteroscopic myomectomy and 1 vaginal myomectomy prior to UAE. The hysteroscopic myomectomies were completed successfully, but the vaginal myomectomy was abandoned as the fibroid was too high in the uterine cavity for vaginal excision. Two of the four women, who underwent hysteroscopic myomectomy, subsequently cancelled their planned UAE as their symptoms improved with hysteroscopic resection of fibroids alone. The remaining ten patients underwent UAE. There were no cases of infection, spontaneous expulsion of a fibroid or the need for surgical intervention in this subgroup; however, uterine sepsis was diagnosed in two women with type II, and deeper fibroids, in those who underwent UAE (Table 1).
All 103 women with normal uterine cavities or type II submucous fibroid at hysteroscopy also underwent UAE. Two of this subgroup was admitted to hospital with infection, approximately 2 weeks after the embolisation. They were managed conservatively with antibiotics, and none required hysterectomy.
Our protocol of carrying out routine diagnostic hysteroscopy prior to UAE, to identify patients with type 0 or I fibroids, does not seem to be worthwhile. Although we identified 12 (10.7 %) women with submucous fibroids which were wholly or mostly in the uterine cavity, only 5 agreed to undergo hysteroscopic or vaginal myomectomy, and only 2 ultimately cancelled their embolisation because of symptomatic improvement. None of the remaining ten had any problems after embolisation in terms of infection or fibroid expulsion. As a result, we no longer offer routine diagnostic hysteroscopy to patients requesting UAE just to confirm or exclude the presence of intracavitary fibroids.
MRI in our study was sensitive in picking up type 0–1 submucous fibroids in 75 % of women. In 25 % of women, type 0–1 submucous fibroids were missed, but were reported as type II fibroids. Also, MRI was not specific for women with endometrial polyps.
Apart from the 12 patients with submucous fibroids, we also found that 6 women had endometrial polyps on routine hysteroscopy. The polyps were asymptomatic and proved to be benign on histology. There is debate regarding the need to remove benign asymptomatic polyps, and for this reason, we doubt if routine hysteroscopy can be justified just for the purposes of excluding such intrauterine lesions [18, 19].
Based on our results, a more logical protocol for assessing patients prior to UAE would be selective hysteroscopy in those women with a suspicion of intracavitary fibroids on MRI scanning. MRI scanning is routine prior to UAE in our hospital, and earlier studies have shown that MRI, hysterosonographic examination and diagnostic hysteroscopy were equally effective for evaluation of uterine cavity. Even if not all such patients elect to undergo hysteroscopic (or vaginal) excision of the relevant fibroid, our experience shows that some will, and this can be associated with symptomatic relief in some, such that UAE becomes unnecessary. This study has led to change in our clinical practice, as we do now selective hysteroscopy prior to UAE since June 2011.
We would like to thank all the staff at hysteroscopy clinic and intervention radiology for their help in providing the data for analysis. This study was presented as oral presentation at 20th annual congress of European Society for Gynaecological Endoscopy (ESGE) at London in September 2011.
Conflict of interest
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