Treatment of large uterine fibroids

Uterine artery embolisation for uterine fibroids: Our experience at a tertiary care service hospital

BACKGROUND

Uterine artery embolisation (UAE) has evolved as a minimally invasive and effective alternative, treatment modality for women with symptomatic fibroids. We discuss our initial experience of UAE in the management of symptomatic fibroids.

METHODS

Twenty five symptomatic patients of uterine fibroids were treated with UAE by selectively cannulating and injecting poly vinyl alcohol particles into the uterine arteries. Post treatment follow up was done at 2 and 6 months respectively.

RESULTS

Pre-treatment, the sizes of fibroids were between 3.9 and 10.9 cm (mean 7.4) on ultrasonography. Of the total 25 patients, 49 uterine arteries were embolised with a technical success rate of 98%. Menorrhagia persisted in 7 patients, dysmenorrhea in 4 patients and pressure symptoms in 2 patients respectively in follow up study of six months which corresponds to a reduction in symptoms by 68% for menorrhagia, 71% for dysmenorhoea and 75% for those with pressure symptoms respectively. At 2 months follow-up post embolisation, the mean diameter of the fibroid was 4.03 cm (range 2-5.2 cm) and at 6 months 3.2 cm (range 1.3-4.1 cm), corresponding to size reduction of 45.5% and 57%, respectively. Follow up with ultrasonography at 2 and 6 months period showed successful fibroid reduction in 24 patients with corresponding reduction in the symptomatology. One patient remained symptomatic with increase in fibroid size and had to undergo hysterectomy.

CONCLUSION

Uterine artery embolisation can be considered as an alternative to hysterectomy in appropriately selected symptomatic patients of uterine fibroids.

Gene and protein expression of progesterone receptor isoforms A and B, p53 and p21 in myometrium and uterine leiomyoma

PURPOSE

To assess gene and protein expression of progesterone receptor isoforms A and B, cell cycle regulators p53 and p21 in leiomyoma and myometrium.

METHODS

Samples were collected from 14 patients in reproductive age who underwent abdominal hysterectomy. Gene expression of PRA, PRB, p53 and p21 was analyzed by real-time PCR. Protein expression was assessed by Western blots.

RESULTS

There was no change in gene and protein expression of PRA and PRB in both tissues. The ratio between isoforms (PRA:PRB) was not different between tissues and showed a strong correlation (r = 0.767, P = 0.004). The analysis of gene expression and protein showed increased levels of mRNA and protein p53 in leiomyoma compared to myometrium (P = 0.030 and P = 0.002, respectively). The same increase was observed in p21 mRNA levels (P = 0.016) and protein p21 levels (P = 0.026) in samples of uterine leiomyoma.

CONCLUSIONS

PRA:PRB ratio is similar in normal myometrium and leiomyomas. p53 and p21 mRNA and protein levels are increased in leiomyomas.

Features of uterine fibroids treated by abdominal myomectomy at Nnewi, Nigeria

Seventy-two women with symptomatic uterine fibroids were treated by abdominal myomectomy from January 1994 to December 1996. Important features were a mean age of 32.3 years (range 25-49 years) and parity of 0 to 6; 83% ( n = 60) were nulliparous and 68% ( n = 49) were unmarried. The average estimated blood loss was 480 ml with 1.6 g/dl mean haemoglobin drop and 15.3% required blood transfusion. Complications were mild and infrequent; 7% ( n = 5) had mild wound infection and 16.7% ( n 12) had a febrile complication. The average hospital stay was 8.1 days. There was no mortality. In this study, symptomatic uterine fibroids requiring abdominal myomectomy predominantly affected young women who were mainly unmarried and nulliparous. Although the the operation was safe and well tolerated, preoperative GnRH(a) is recommended to reduce fibroid size and need for blood transfusion.

Uterine artery embolization: A pilot study in a rabbit model

Eight female adult ex-breeder New Zealand white rabbits underwent bilateral, unilateral, or superselective unilateral uterine artery embolization. The histopathologic changes after embolization in New Zealand white rabbits resemble those in humans, making rabbits an appropriate model for experimental uterine artery embolization.

Uterine artery embolization for symptomatic fibroids

OBJECTIVES

The aim of this study was to introduce uterine artery embolization (UAE) as an effective and safe treatment option in patients with symptomatic fibroids.

METHODS

Sixty-one patients underwent UAE with a 3- and 12-month follow-up.

RESULTS

The procedure was well tolerated in all patients with the following symptoms improving: heavy bleeding [90% (95% CI 80.21%; 95.4%)]; dysmenorrhea [median -4 (95% CI -5; -4)]; feeling of a mass [74% (95% CI 57.9%; 85.8%)]; abdomino-pelvic discomfort [88% (95% CI 75.5%; 94.9%)]; and deep dyspareunia [90% (95% CI 71.1%; 97.3%)]. Uterine volume decreased by a median difference of 188 cm(3) (95% CI 146.5; 236), which related to a median % reduction of 37.7% (95% CI 32.4%; 45%) at 12-month follow-up. Most (91%) patients were satisfied with the procedure and only minor complications occurred.

CONCLUSIONS

Uterine artery embolization can be performed effectively and safely at centers with the necessary expertise and can be used with success in Africa.

Embolização uterina para tratamento de mioma sintomático: experiência inicial revisão da literatura

OBJETIVO: Apresentar os resultados da experiência clínica inicial de 100 casos de mulheres portadoras de miomatose sintomática que foram submetidas a embolização das artérias uterinas como forma de tratamento principal. Apresenta-se, também, extensa revisão bibliográfica sobre o tema, para determinar as indicações e contra-indicações, bem como as eventuais complicações do método. MATERIAL E MÉTODO: Cem pacientes com miomatose sintomática foram submetidas a embolização das artérias uterinas como única forma de tratamento. O principal sintoma que indicou a intervenção foi o aumento do fluxo menstrual em 79 pacientes e dor associada à miomatose em 21. O diagnóstico de miomatose foi realizado por meio de ultra-sonografia em 75 pacientes, e pela associação de ultra-sonografia e ressonância magnética em 25 pacientes. O volume uterino médio avaliado por esses métodos de imagem resultou em 487 cm³. Os procedimentos foram realizados em duas instituições hospitalares: uma pública, onde foram atendidas 56 pacientes dependentes do Sistema Único da Saúde (SUS), e outra particular, onde foram atendidas 46 pacientes com plano de assistência médica. Setenta e seis pacientes foram avaliadas clinicamente após 12 semanas da realização da embolização uterina. RESULTADOS: O procedimento foi completado com sucesso em 97% dos casos, utilizando-se técnica convencional. O acompanhamento e a avaliação clínica após 12 semanas evidenciou que houve melhora dos sintomas em mais de 90% das pacientes. Verificou-se, ainda, redução de volume uterino de 52%. Não foram observadas complicações técnicas ou clínicas relevantes. CONCLUSÃO: A técnica de embolização uterina para tratamento da miomatose sintomática é um método simples, eficiente e seguro.

Uterine artery embolisation for the treatment of symptomatic uterine fibroids: short-term results of work in progress

Bilateral uterine artery embolisation (UAE) was used to treat 11 women with symptomatic uterine fibroids. Uterine volume and dominant fibroid volume were assessed quantitatively by ultrasonography both before and at two and six months post procedure. Both uterine arteries were occluded effectively in all of the women, and the procedure was well tolerated, with hospital stays limited to 24-48 hours in all cases. An improvement of symptoms occurred in 10 of the 11 women. There were no significant complications. The mean percentage reductions in uterine volume and dominant fibroid volume at six months following the procedure were 45.32% and 56.34%, respectively. Bilateral uterine artery embolisation for the treatment of uterine fibroids is a minimally invasive technique with very good clinical results. This procedure may be considered as an alternative to hysterectomy, or myomectomy in properly selected cases.

Uterine artery embolization treatment of uterine fibroids: effect on ovarian function in younger women

PURPOSE

To evaluate how uterine artery embolization (UAE) treatment for uterine fibroids (UF) affects ovarian function in young Middle Eastern women.

MATERIALS AND METHODS

In this prospective study, 32 patients (mean age, 34 y; range, 26-45 y) underwent UAE treatment of symptomatic fibroids. Serum follicle-stimulating hormone (FSH) levels were measured before and after the embolization treatment. Preprocedural levels were determined on the second day of the menstrual cycle. Postprocedural levels were measured 3 months and 6 months after embolization. A detailed history of menstrual cycles was obtained before and after UAE.

RESULTS

Thirty premenopausal patients had normal menses before UAE. Mean FSH levels before and 3 months after UAE were 6.83 IU/L +/- 1.8 and 6.99 IU/L +/- 1.67, respectively (P =.66). Normal menstruation resumed 2-3 months after the procedure. In two perimenopausal women, who had irregular menses and decreased ovarian reserve, mean FSH levels increased transiently from 22 and 30 IU/L to 40 and 48 IU/L, respectively, 3 months after UAE; they developed transient amenorrhea.

CONCLUSION

In this study, UAE had no clinically relevant adverse effects on normally functioning ovaries and could be used safely in the treatment of symptomatic fibroids in premenopausal women. Larger studies are required for further support of this observation.

Pelvic pain and menstrual related illnesses

When approaching the patient with acute pelvic pain, it is imperative to keep in mind the subtle differences each diagnosis can present with. Narrowing down pelvic pain to a specific location in the body while maintaining a high index of suspicion for acute pelvic pain emergencies will aid in a more rapid and accurate diagnosis. Bear in mind that acute pelvic pain is a clinical challenge, and although an exact diagnosis maybe elusive, emergency treatment should always be provided first and foremost despite an exact diagnosis.

Pathologic features of uterine leiomyomas following uterine artery embolization

Bilateral uterine artery embolization has recently been employed as an alternative to operational treatment of uterine leiomyomas. The pathologic features induced by uterine artery embolization have not been previously described in detail. Usually patients experience symptomatic improvement with a reduction in size of the leiomyomas. This report describes the pathologic features in a series of 10 uterine leiomyomas where tissue was available for histologic examination following uterine artery embolization. Characteristic histologic features within the leiomyomas included massive necrosis, sometimes with dystrophic calcification, vascular thrombosis, and intravascular foreign material that elicited a histiocytic and foreign-body giant cell reaction. In some cases, intravascular foreign material was present elsewhere in the myometrium, the cervix, or paraovarian region. In occasional cases, there were foci of myometrial necrosis and microabscess formation beyond the confines of the leiomyomas. Foci of extrauterine inflammation were also occasionally identified. Histopathologists should be aware of these findings because the use of uterine artery embolization will possibly become more widespread in the future.

Uterine artery embolisation for symptomatic fibroids

Traditional operative treatments for symptomatic fibroids--hysterectomy and myomectomy--involve considerable morbidity. Although morbidity is reduced with endoscopic surgery, this technique is not widely available, and has limitations. Embolisation of the pelvic vasculature is not a new procedure, having been used to treat postpartum and postsurgical bleeding for 20 years. It has only recently been used to treat symptomatic fibroids. Uterine artery embolisation can produce a mean reduction of 29%-51% in uterine volume at the time of the three-month review, with longer follow-up showing continued shrinkage and no regrowth. The range of shrinkage is highly variable, which needs to be explained to all potential candidates. Symptomatic relief is a more certain outcome, with relief of pelvic pressure symptoms in 91%-96% of women. There is a small risk of complications requiring hysterectomy, and the long-term effect on ovarian function is unknown.

Transcatheter uterine artery embolization for the management of symptomatic uterine leiomyomas

Transcatheter arterial embolization has been applied traditionally in obstetrics and gynecology for the emergency control of pelvic hemorrhage, usually after failure of conventional surgical measures. Pelvic trauma is the most common, nongynecologic etiology of uncontrollable pelvic hemorrhage requiring use of this hemostatic technique. Recently, elective transcatheter arterial embolization of uterine leiomyomas has been performed to decrease related symptomatology in an attempt to avoid surgical intervention. Our objective was to review current pertinent data regarding this new therapeutic modality. To this goal, all manuscripts published in the literature regarding this topic obtained from a MEDLINE search for 1966 through September 1998 were selected and reviewed. Additional sources were identified through cross-referencing. Currently, approximately 193 patients worldwide have been managed with this investigational procedure. Main indications include symptomatic uterine leiomyomata with menometrorrhagia, anemia, or pain. Success rates seem promising with a very low failure rate. This procedure results in significant (uterine and leiomyoma) volume reduction of between 20 and 80 percent. Postprocedural pain is common during the first day after the procedure, often requiring intravenous nonsteroidal antiinflammatory drugs and narcotic analgesia. Rare complications include endometritis, pyometra, and uterine necrosis, which may require hysterectomy. Reported follow-up time ranges between 6 and 60 months. Implications on subsequent fertility have not been established. Although successful pregnancies subsequent to this procedure have been reported, because of the unknown long-term effect of this procedure on fertility or perinatal outcome, this technique should not be performed when future fertility is desired. This review suggests that although not currently accepted as standard of care, transcatheter embolization of the uterine arteries can be considered as a nonsurgical technique for the management of appropriately selected patients.

TARGET AUDIENCE

Obstetricians & Gynecologists, Family Physicians

LEARNING OBJECTIVES

After completion of this article, the reader will be able to explain the current indications and contraindications of transcatheter uterine artery embolization of leiomyomas; to identify the various complications of the procedure and the type of embolic materials used; and to estimate the success rate of this procedure in the current literature.

Embolization of uterine fibroids

14 patients have undergone uterine artery embolization of uterine fibroids. No complications related to the procedure have occurred. In all six of the cases with available data, there has been a reduction in fibroid volume as measured with MRI at 2 months post procedure (average reduction 43%). Technical aspects of this promising procedure are described.

Hysterectomy and myomectomy by laparotomy

Hysterectomy provides definitive treatment for uterine fibroids. Surgery should be offered to women whose fibroids are symptomatic; it is not indicated on the basis of uterine size alone. Myomectomy is an option for those wishing to preserve uterine function. The prospects for successful pregnancy following myomectomy are encouraging, although there is a significant risk of the later recurrence of fibroids. Laparotomy remains the most appropriate surgical approach for large fibroids, although vaginal, rather than abdominal, hysterectomy may be suitable for some women whose uteri do not exceed a 12-14 week gestation size. There is some evidence that the morbidity of abdominal procedures increases with very large uteri. Uterine shrinkage with GnRH analogues may facilitate vaginal hysterectomy and be useful prior to abdominal hysterectomy or myomectomy for very large fibroids, although cost-effectiveness for its use with abdominal procedures has not been demonstrated.

Ultrasound detection of vault haematoma following vaginal hysterectomy

OBJECTIVE

To assess whether ultrasound detection of vault haematoma can be used as a predictor of post-operative morbidity following vaginal hysterectomy.

DESIGN

Prospective observational study of consecutive cases of vaginal hysterectomy performed between 1991 and 1994.

SAMPLE

Two hundred and twenty-three women having undergone vaginal hysterectomy.

METHODS

All women had transvaginal ultrasound examination by an independent observer on the third post-operative day. Routine observations and clinical assessments were made by established management protocol, by staff blinded to the ultrasound findings.

MAIN OUTCOME MEASURES

Febrile morbidity; haemoglobin drop; need for blood transfusion; length of stay in hospital; re-admission rate and length of stay.

RESULTS

Of the 223 scanned women, 55 (25%) had a vault haematoma. This group was compared with the 168 women with no haematoma. Significant increases in febrile morbidity (31% vs 7%), post-operative haemoglobin drop (2.5 g/dL vs 1.6 g/dL), need for blood transfusion (14.5% vs 1.2%), representation to hospital (25.5% vs 5.4%) and length of hospital stay (8.87 days vs 6.25 days) were seen in the haematoma group.

CONCLUSION

Ultrasound detection of vault haematoma following vaginal hysterectomy is a common finding associated with increased febrile morbidity, need for blood transfusion, longer hospital stay and higher re-admission rate. In view of increasing demand for early discharge, driven by purchasers and patients, post-operative ultrasound identifies a high risk population and is both convenient and noninvasive. To further reduce morbidity, it also offers the opportunity to perform a controlled trial of prophylactic antibiotics in this identified subset.

Transcatheter uterine artery embolisation to treat large uterine fibroids

Bilateral uterine artery embolisation was performed to treat eight women with symptomatic large fibroids requiring treatment. Uterine volume was quantitatively assessed by magnetic resonance imaging. Both uterine arteries were occluded effectively in all women, and the procedure was well tolerated, with a 24-36 hour admission for pain relief. The level of pain experienced was variable, but well controlled. Some women experienced intermittent vaginal discharge and pain following the procedure. Improvement of symptoms occurred in six of the seven women and the eighth woman conceived. There were no significant complications. At three months four women had a uterine volume of < 350 cm3. Embolisation appears to be a good alternative to surgery, but longer follow up is required to evaluate the long term effects and to determine those patients for whom the procedure is suitable.

The Pryor technique of uterine morcellation

OBJECTIVE

An efficient, yet largely forgotten technique of transvaginal uterine wedge morcellation developed by William Pryor at the turn of the century is described.

METHOD

Pryor's technique of transvaginal wedge morcellation was employed to reduce uterine size in four cases of vaginal hysterectomy and in 10 cases of laparoscopic-assisted vaginal hysterectomy in 14 patients with symptomatic uterine enlargement.

RESULT

Operating time ranged from 49-170 min (mean 92 min). Estimated blood loss ranged from 150 to 480 ml (mean 225 ml). Uterine size ranged from 360-710 g (mean 455 g). No procedure required conversion to laparotomy. Primary indications for preliminary laparoscopy were confirmed in nine of 10 cases. No vaginal hysterectomy required subsequent laparoscopy. No patient required blood transfusion. No intra- or post-operative complications were noted. All patients were discharged home within 48 h post-surgery.

CONCLUSION

Pryor's technique of wedge morcellation appears to be a safe and efficient method for the reduction of uterine size transvaginally.