Percutaneous microwave ablation of uterine fibroids: correlation between shrinkage and trend symptoms

Changes in liver and kidney function, red blood cell count and hemoglobin levels 1 day after ultrasound-guided percutaneous microwave ablation for uterine fibroids

OBJECTIVE

To investigate the changes in liver and kidney function, red blood cell (RBC) count and hemoglobin (HGB) levels in patients undergoing ultrasound-guided percutaneous microwave ablation (UPMWA) for uterine fibroids on postoperative day 1.

METHODS

The changes in liver and kidney function, RBC count and HGB levels in 181 patients who underwent selective UPMWA in the Second Affiliated Hospital of Shantou University Medical College, China, between August 2017 and January 2023 were retrospectively analyzed.

RESULTS

All patients underwent UPMWA for uterine fibroids; 179 patients had multiple uterine fibroids and 2 patients had single uterine fibroids. The maximum fibroid diameter ranged from 18 to 140 mm, with an average of 68.3 mm. Ultrasound imaging was used to confirm that the blood flow signal within the mass had disappeared in all patients, indicating that the ablation was effective. Within 24 h, compared with before UPMWA, levels of total bilirubin, direct bilirubin, indirect bilirubin and aspartate aminotransferase had significantly increased (p < 0.01), whereas levels of total protein, albumin, globulin, alanine aminotransferase, creatinine and urea had significantly decreased (p < 0.01). Acute kidney injury (AKI) occurred in 1 of the 181 patients. The RBC count and HGB levels decreased significantly after UPMWA (p < 0.01).

CONCLUSION

Ultrasound-guided percutaneous microwave ablation for uterine fibroids can impose a higher detoxification load on the liver and cause thermal damage to and the destruction of RBCs within local circulation, potentially leading to AKI. Protein levels significantly decreased after UPMWA. Therefore, perioperative organ function protection measures and treatment should be actively integrated into clinical practice to improve prognosis and enhance recovery.

The impact of fibroid treatments on quality of life and mental health: a systematic review

Fibroids significantly impact the quality of life (QOL) and mental health of affected women. However, there are limited comparative data on QOL measures after medical, surgical, and radiologic interventions in women with fibroids. This study aimed to assess the current literature evaluating the impact of fibroids on QOL measures using several validated questionnaires for radiologic, medical, or surgical interventions or a combination of interventions before and after treatment. PubMed, PsycINFO, ClinicalTrials.gov, Embase, and Cochrane Library were searched from January 1990 to October 2023 to evaluate the available evidence, and the risk of bias was assessed using Cochrane RoB 2.0 or the Newcastle-Ottawa Scale. The review criteria included randomized controlled trials (RCTs) and observational cohort studies that included premenopausal women with symptomatic uterine fibroids, confirmed by imaging, who underwent an intervention to target fibroid disease. Only reports using validated questionnaires with a numerical baseline (pretreatment) and posttreatment scores were included. The exclusion criteria included perimenopausal or postmenopausal patients, conditions in addition to uterine fibroids that share similar symptoms, or studies that did not focus on QOL assessment. Abstracts were screened, and full texts were reviewed to determine whether studies met the inclusion criteria. A total of 67 studies were included after final review: 18 RCTs and 49 observational studies. All interventions were associated with a significant improvement in uterine fibroid-specific QOL measures, mental health metrics, and a reduction in symptom severity scores after treatment. These data reveal a substantial impact of uterine fibroids on the QOL and mental health of women with fibroids and indicate the metrics that can be used to compare the effectiveness of fibroid treatment options.

An Evaluation of Ultrasound-Guided Percutaneous Microwave Ablation for the Treatment of Symptomatic Uterine Fibroids

PURPOSE

To evaluate the feasibility and effectiveness of ultrasound-guided percutaneous microwave ablation (MWA) for the treatment of symptomatic uterine fibroids.

MATERIALS AND METHODS

A single-center retrospective study was conducted on 17 patients, mean age 37.5 years (SD ± 7.3; range 19-47 years) with symptomatic uterine fibroid who underwent MWA between September 2018 and December 2022. Outcomes included volume reduction of uterine fibroids, hemoglobin levels, uterine fibroid symptoms, and health-related quality-of-life questionnaire scores before and 12 months after ablation.

RESULTS

Preoperative fibroid diameter was a mean of 6.7 cm (SD ± 1.1; range 5-9 cm), and volume was a mean of 101.9 cm3 (SD ± 63.3; range 16.9-264.1 cm3). The mean ablation time was 12.2 minutes (SD ± 3.1; range, 8-20 minutes). The mean reduction of volume at 12 months after treatment was 70.9% (SD ± 23.8). The hemoglobin level increased significantly from 9.96 g/dL ± 2.33 before treatment to 12.14 g/dL ± 1.34 at 12 months after treatment (P = .002). The symptom severity score and health-related quality-of-life scores were significantly improved at follow-up (P < .001).

CONCLUSIONS

The application of MWA as a standalone treatment method might provide an effective, minimally invasive option for Federation of Gynecology and Obstetrics Types 1-6 symptomatic uterine fibroids with the potential to enhance patients' quality of life.

Ultrasound-guided percutaneous microwave ablation for adenomyosis with abnormal uterine bleeding: clinical outcome and associated factors

OBJECTIVE

To investigate the factors affecting the efficacy of ultrasound (US)-guided percutaneous microwave ablation (PMWA) for adenomyosis with abnormal uterine bleeding (AUB-A).

METHODS

Baseline data of patients with AUB-A who underwent US-guided PMWA treatment between October 2020 and October 2021, including demography characteristics, laboratory and imaging examination results were retrospectively analyzed. 3D reconstruction of magnetic resonance imaging (MRI) was applied to quantitatively assess the local treatment responses, including ratio of non-perfusion volume to adenomyosis volume (NPVr), ablation rate of the endometrial-myometrial junction (EMJ), and surface area (SA) of the ablated part of the EMJ. Patients were followed up at 3, 6, and 12 months after treatment, and divided into two groups: group with complete relief (CR), and group with partial relief (PR) or no relief (NR). Data were compared between them.

RESULTS

Thirty-one patients were analyzed with a mean age of 38.7 ± 6.8 years (range: 24-48): 48.4% (15/31), 63.3% (19/30), and 65.5% (19/29) achieved CR at 3, 6, and 12 months, respectively. In univariate analysis, compared with the PR/NR group, serum CA125 levels were significantly lower in CR group at 3 months, while ablation rates of EMJ and SA of the ablated part of the EMJ were significantly higher at the three time points. Other baseline characteristics and NPVr did not differ between the two groups.

CONCLUSION

Baseline CA125 and ablation rate of the EMJ and SA of the ablated part of the EMJ are associated with the outcome of AUB-A patients after US-guided PMWA treatment.

Effectiveness and Safety of Ultrasound-guided Percutaneous Microwave Ablation for a Single Uterine Fibroid Greater than 300 cm3

STUDY OBJECTIVE

To evaluate the effectiveness and safety of ultrasound-guided percutaneous microwave ablation (MWA) for a single uterine fibroid greater than 300 cm³.

DESIGN

Retrospective observational study.

SETTING

China-Japan Union Hospital of Jilin University, China.

PATIENTS

Thirty-seven patients each with a single fibroid greater than 300 cm³ diagnosed by ultrasound and core needle biopsy.

INTERVENTIONS

Ultrasound-guided percutaneous MWA.

MEASUREMENTS AND MAIN RESULTS

All patients were followed up for 12 months postoperatively to assess the postoperative lesion volume reduction rate, degree of symptomatic relief, improvements in quality of life, and occurrence of adverse events. All 37 patients met the criteria for complete ablation, and the lesion volume significantly decreased from 334.28 cm³ (95% confidence interval [CI] 326.75-366.73) preoperatively to 52.01 cm³ (95% CI, 46.95-74.69) at the 12-month follow-up (difference: 280.15 cm³; 95% CI, 267.92-294.65; p <.001). The lesion volume reduction rates at 1, 3, 6, and 12 months postoperatively were 27.30% (95% CI, 24.12-31.45), 52.90% (95% CI, 47.95-55.80), 67.90% (95% CI, 63.03-70.77), and 84.00% (95% CI, 80.22-85.94), respectively. The differences in the preoperative and postoperative Uterine Fibroid Symptom and Health-Related Quality of Life Questionnaire scores were significant (p <.01). The hemoglobin levels of the anemic patients were significantly elevated after the procedure (p <.001). Of the 37 patients in this study, 29 patients (78.38%) had a highly significant treatment effect, and 8 patients (21.62%) had a significant treatment effect. Seventeen patients (45.95%) had Society of Interventional Radiology grade A to B adverse effects that required no clinical intervention or only simple clinical intervention.

CONCLUSION

Ultrasound-guided percutaneous MWA has good clinical efficacy and high safety in the treatment of a single uterine fibroid greater than 300 cm³.

Three-dimensional ultrasound VOCAL combined with contrast-enhanced ultrasound: an alternative to contrast-enhanced magnetic resonance imaging for evaluating ablation of benign uterine lesions

OBJECTIVE

This study explores the feasibility and value of three-dimensional ultrasound virtual organ computer-aided analysis (3D-VOCAL) combined with contrast-enhanced ultrasound (CEUS) for measuring the non-perfused volume (NPV) after microwave ablation (MWA) of benign uterine lesions.

METHODS

Fifty-six patients with uterine myoma (UM) and adenomyosis (AM) treated with MWA were enrolled. NPV measurements were obtained postoperatively using two-dimensional CEUS (2D-CEUS), 3D-VOCAL combined with CEUS and three-dimensional contrast-enhanced magnetic resonance imaging (3D-CEMRI). Bland-Altman analysis and intraclass correlation coefficient (ICC) values were used to analyze the agreement of NPV measurements obtained via 2D-CEUS and the combined method with 3D-CEMRI. The inter- and intra-observer agreements of the NPV values obtained with all three methods were also analyzed.

RESULTS

Considering 3D-CEMRI as the standard, 3D-VOCAL showed greater agreement than 2D-CEUS and higher ICCs (ICC, 0.999 vs. 0.891) than 2D-CEUS for different lesion types and sizes of non-perfusion areas (p < 0.001 for all comparisons). NPV measurements obtained via 2 D-CEUS and 3 D-CEMRI differed significantly for AM and non-perfusion areas with maximum diameter ≥5 cm (p < 0.05) and showed no significant differences (p > 0.05) for UM and non-perfusion areas with maximum diameter <5 cm. The NPV measurements obtained via 3D-VOCAL and 3D-CEMRI did not differ significantly (p > 0.05). The intra- and inter-observer agreements of 3D-VOCAL measurements were better than those of 2D-CEUS and slightly lower than those of 3D-CEMRI.

CONCLUSIONS

3D-VOCAL combined with CEUS provides accurate estimates of NPV after MWA of benign uterine lesions, and offers a reliable, simple and efficient alternative to CEMRI.

Ultrasound-guided percutaneous microwave ablation for uterine fibroids: mid-term local treatment efficiency and associated influencing factors

OBJECTIVE

To investigate the mid-term local treatment efficiency of ultrasound-guided percutaneous microwave ablation (MWA) for uterine fibroids (UFs) and the associated influencing factors.

METHODS

From July 2020 to October 2021, a total of 28 patients with 52 UFs who had undergone ultrasound-guided MWA were retrospectively included in this study. Pre-treatment clinical characteristics, conventional ultrasound and contrast-enhanced ultrasound (CEUS) features were analyzed to explore their correlation with volume reduction ratios (VRRs) of sufficient ablation (i.e. a VRR of at least 50% at the 3 month follow-up). The patients were assessed at 1-, 3-, 6 month follow-up after MWA treatment and the assessment included VRR, adverse events, uterine fibroid symptom (UFS) and quality of life (QoL) scores, and clinical symptoms.

RESULTS

The procedures of percutaneous MWA for UFs were tolerated well and no major complications occurred in all patients. At the 1-, 3-, 6 month follow-up, the median VRRs of UFs were 30.1%, 46.9%, and 65.8%, respectively. At the 3 month follow-up, 44.4% of fibroids obtained sufficient ablation while the remaining 55.6% obtained partial ablation (i.e. a VRR of <50%). Non-enhancing area during the early phase (i.e. within 30 s after injecting contrast agent) on pre-treatment CEUS was present in 22.2% UFs, which was associated with sufficient ablation at the 3 month follow-up (p < 0.05). In addition, the relevant clinical symptoms of all patients were alleviated or removed. The UFS and QoL score after MWA decreased significantly in comparison with those after MWA (p = 0.04 and p = 0.057, respectively), indicating a remarkable improvement of clinical symptom and QoL.

CONCLUSION

Ultrasound-guided MWA is an effective and safe method to treat patients with UFs. Non-enhancing area during the early phase on pretreatment CEUS is associated with mid-term local treatment efficiency, which might be used to predict treatment outcome.

ADVANCES IN KNOWLEDGE

Non-enhancing area during the early phase on pretreatment CEUS is an important factor associated with mid-term local treatment efficiency. This is the first study finding that CEUS feature can be used as a marker for the prediction of mid-term local treatment response.

Ultrasound-guided Microwave Ablation in the Management of Symptomatic Uterine Myomas: A Systematic Review and Meta-analysis

OBJECTIVE

This systematic review and meta-analysis aimed to evaluate the clinical effects and safety of ultrasound-guided microwave ablation (MWA) for the treatment of symptomatic uterine myomas.

DATA SOURCES

We searched PubMed, Web of Science Core Collection, Cochrane Library, Embase, Scopus, and Google Scholar for studies from January 2000 to January 2021.

METHODS OF STUDY SELECTION

We included all studies that reported the clinical outcomes of ultrasound-guided MWA in women with symptomatic uterine myomas. Two researchers conducted the study selection according to the screening criteria.

TABULATION, INTEGRATION, AND RESULTS

We evaluated the risk of bias and evidence quality using the Newcastle-Ottawa scale. Two researchers independently extracted information from the included studies. We extracted the standardized mean difference (SMD) and pooled proportion with a 95% confidence interval (CI) for the outcome measures of interest. A total of 10 studies representing 671 patients were included. The Uterine Fibroid Symptom and Quality of Life (UFS-QoL) questionnaire was used to assess the clinical effects. Compared with baseline, the UFS scores decreased significantly (SMD 3.37; 95% CI, 2.27-4.47; p <.001; reduction rate 65.9%), QoL scores increased significantly (SMD -3.12; 95% CI, -3.93 to -2.30; p <.001; rate of increase 72.0%), and hemoglobin concentration increased significantly (SMD -2.13; 95% CI, -3.44 to -0.81; p = .002; rate of increase 30.3%) at follow-up. The mean operation time was 34.48 minutes (95% CI, 22.82-46.13; p <.001). The rate of reduction in myoma volume after MWA was 85.3% (95% CI, 82.7%-88.0%, p <.001). No major adverse event was reported, and the incidence of minor adverse events was 21.1% (95% CI, 15.1%-27.0%, p <.001).

CONCLUSION

Ultrasound-guided MWA is an effective and safe minimally invasive therapy for symptomatic uterine myomas.

A systematic review of the psychosocial impact of fibroids before and after treatment

OBJECTIVE

Despite the high prevalence of uterine fibroids, the psychosocial impact of fibroids has not been evaluated across different quality of life indicators and compared with other chronic conditions. Here, we rigorously analyzed available evidence pertaining to the psychosocial burden of uterine fibroids in premenopausal women and compared validated quality of life and symptom scores before and after treatment.

DATA SOURCES

We searched PubMed, PsycINFO, ClinicalTrials.gov, Embase, and Cochrane Library for publications from January 1990 to January 2020.

STUDY ELIGIBILITY CRITERIA

We considered English-language publications that evaluated the association between uterine fibroids diagnosed by imaging studies in premenopausal women and quality of life by standardized and validated questionnaires at baseline and after treatment. We used a detailed list of terms related to quality of life, questionnaires, and uterine fibroids to conduct the search.

METHODS

Three reviewers screened titles and abstracts and then obtained full-text articles for further analysis. The reviewers assessed risk of bias using established Cochrane and Newcastle-Ottawa Scale guidelines. The quality of life scores of premenopausal women with fibroids were reviewed at baseline and compared with those of published quality of life scores in other disease populations in addition to after fibroid treatment.

RESULTS

A total of 57 studies were included in the review: 18 randomized controlled trials and 39 observational studies. Of note, the 36-Item Short Form Survey and European Quality of Life Five-Dimension Scale questionnaires both indicated a diagnosis of uterine fibroids to have a disability score that was similar to or exceeded (was a greater psychosocial stressor) a diagnosis of heart disease, diabetes mellitus, or breast cancer. Quality of life scores were lower at baseline than after treatment in all instruments measuring these variables in women with uterine fibroids, indicating significantly impaired psychosocial functioning. Uterine fibroids were associated with significant patient-reported health disabilities related to bodily pain, mental health, social functioning, and satisfaction with sex life.

CONCLUSION

A diagnosis of uterine fibroids was a significant psychosocial stressor among women at baseline and relative to other diseases. Validated quality of life instruments indicated therapeutic success and the improvement of both physical and emotional symptoms after treatment.