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European Journal of Obstetrics,... Jun 2023To investigate whether systematic pelvic and para-aortic lymphadenectomy offers superior survival rates in patients with advanced epithelial ovarian cancer (EOC), tubal,... (Meta-Analysis)
Meta-Analysis Review
The role of systematic pelvic and para-aortic lymphadenectomy in the management of patients with advanced epithelial ovarian, tubal, and peritoneal cancer: A systematic review and meta-analysis.
OBJECTIVE
To investigate whether systematic pelvic and para-aortic lymphadenectomy offers superior survival rates in patients with advanced epithelial ovarian cancer (EOC), tubal, or peritoneal cancer.
METHODS
We searched the electronic databases PubMed (from 1996), Cochrane Central Register of Controlled trials (from 1996), and Scopus (from 2004) to September 2021. We considered randomised controlled trials (RCTs) comparing systematic pelvic and para-aortic lymphadenectomy with no lymphadenectomy in patients with advanced EOC. Primary outcomes were overall survival and progression-free survival. Secondary outcomes were peri-operative morbidity and operative mortality. The revised Cochrane tool for randomised trials (RoB 2 tool) was utilised for the risk of bias assessment in the included studies. We performed time-to-event and standard pairwise meta-analyses, as appropriate.
RESULTS
Two RCTs with a total of 1074 patients were included in our review. Meta-analysis demonstrated similar overall survival (HR = 1.03, 95% CI [0.85-1.24]; low certainty) and progression-free survival (HR = 0.92, 95% CI [0.63-1.35]; very low certainty). Regarding peri-operative morbidity, systematic lymphadenectomy was associated with higher rates of lymphoedema and lymphocysts formation (RR = 7.31, 95% CI [1.89-28.20]; moderate certainty) and need for blood transfusion (RR = 1.17, 95% CI [1.06-1.29]; moderate certainty). No statistically significant differences were observed in regard to other peri-operative adverse events between the two arms.
CONCLUSIONS
Systematic pelvic and para-aortic lymphadenectomy is likely associated with similar overall survival and progression-free survival compared to no lymphadenectomy in optimally debulked patients with advanced EOC. Systematic lymphadenectomy is also associated with an increased risk for certain peri-operative adverse events. Further research needs to be conducted on whether we should abandon systematic lymphadenectomy in completely debulked patients during primary debulking surgery.
Topics: Female; Humans; Lymph Node Excision; Carcinoma, Ovarian Epithelial; Progression-Free Survival; Peritoneal Neoplasms; Ovarian Neoplasms
PubMed: 37149928
DOI: 10.1016/j.ejogrb.2023.04.020 -
Cancer Treatment Reviews Jul 2018One of the late complications associated with radiation therapy (RT) is a possible increased risk of second cancer. In this systematic review, we analysed the incidence... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
One of the late complications associated with radiation therapy (RT) is a possible increased risk of second cancer. In this systematic review, we analysed the incidence of rectal cancer following primary pelvic cancer irradiation.
METHODS
A literature search was conducted using the PubMed and EMBASE libraries. Original articles that reported on secondary rectal cancer after previous RT for a primary pelvic cancer were included. Sensitivity analyses were performed by correcting for low number of events, high risk of bias, and outlying results.
RESULTS
A total of 5171 citations were identified during the literature search, 23 studies were included in the meta-analyses after screening. A pooled analysis, irrespective of primary tumour location, showed an increased risk for rectal cancer following RT (N = 403.243) compared with non-irradiated patients (N = 615.530) with a relative risk (RR) of 1.43 (95% confidence interval [CI] 1.18-1.72). Organ specific meta-analysis showed an increased risk for rectal cancer after RT for prostate (RR 1.36, 95%CI 1.10-1.67) and cervical cancer (RR 1.61, 95% CI 1.10-2.35). No relation was seen in ovarian cancer patients. The modality of RT did not influence the incidence of rectal cancer.
CONCLUSIONS
This review demonstrates an increased risk for second primary rectal cancer in patients who received RT to the pelvic region. This increased risk was modest and could not be confirmed for all primary pelvic cancer sites. The present study does not provide data to change guidelines for surveillance for rectal cancer in previously irradiated patients.
Topics: Humans; Incidence; Neoplasms, Radiation-Induced; Pelvic Neoplasms; Rectal Neoplasms
PubMed: 29957373
DOI: 10.1016/j.ctrv.2018.05.008 -
Clinical Anatomy (New York, N.Y.) Oct 2022The middle anorectal artery (MAA) is considered to supply the middle and lower parts of the rectum, however, its prevalence and point of origin vary across the... (Meta-Analysis)
Meta-Analysis
The middle anorectal artery (MAA) is considered to supply the middle and lower parts of the rectum, however, its prevalence and point of origin vary across the literature. Clinical importance of the MAA becomes evident in the total mesorectal excision during the colorectal surgery of rectal cancer in both sexes, as well as interventional radiology procedures utilizing the prostatic vasculature in males. Major electronic medical databases were investigated for terms pertaining to the MAA and its associated variations. Compatible data regarding the artery's prevalence, laterality, origin, and distribution in both sexes was acquired. The risk of bias within the studies was assessed utilizing the AQUA tool. In total, 28 works (n = 880 patients/1905 pelvic sides) were included in this systematic review and meta-analysis, and their publication date ranged from 1897 until 2021. The overall pooled prevalence estimate for the MAA was 59.8% of the patients, and 55.2% of the pelvic sides studied. The vessel was identified more frequently in cadaveric pelvic sides evaluations (79.3%). The artery was found bilaterally more often (56.7%), and most commonly originated from the internal pudendal artery (50.3%). Anastomoses between the MAA and the other anorectal arteries were reported in 78.1%. The MAA is predominantly a present vessel, with various point of origin. Its direct clinical significance is yet to be discovered in larger study samples, providing more detailed and unified reports of its anatomical features, especially regarding its branches.
Topics: Arteries; Female; Humans; Male; Pelvis; Rectal Neoplasms; Rectum; Sexual Behavior
PubMed: 35474241
DOI: 10.1002/ca.23898 -
Surgery Jun 2023We conducted a systematic review of randomized clinical trials on treating low anterior resection syndrome to help inform current practice. (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
We conducted a systematic review of randomized clinical trials on treating low anterior resection syndrome to help inform current practice.
METHODS
This Preferred Reporting Items for Systematic Reviews and Meta-Analyses-compliant systematic review of randomized clinical trials involved different treatments for low anterior resection syndrome. The risk of bias 2 tool was used to assess the risk of bias. The main outcomes were improvement in low anterior resection syndrome after treatment assessed by change in low anterior resection syndrome, fecal incontinence scores, and adverse treatment effects.
RESULTS
After an initial screening of 1,286 studies, 7 randomized clinical trials were included. Sample sizes ranged between 12 to 104 patients. Posterior tibial nerve stimulation was the most frequently assessed treatment in 3 randomized clinical trials. The weighted mean difference between posterior tibial nerve stimulation and medical treatment or sham therapy in follow-up low anterior resection syndrome score (-3.31, P = .157) was insignificant. Transanal irrigation reduced major low anterior resection syndrome symptoms by 61.5% compared with 28.6% after posterior tibial nerve stimulation with a significantly lower 6-month follow-up low anterior resection syndrome score. Pelvic floor training achieved better improvement in low anterior resection syndrome than standard care (47.8% vs 21.3%) at 6 months, but this was not maintained at 12 months (40.0% vs 34.9%). Ramosetron was associated with a greater short-term improvement in major low anterior resection syndrome (23% vs 8%) and a lower low anterior resection syndrome score (29.5 vs 34.6) at 4-weeks follow-up than Kegels or Sitz baths. No significant improvement in bowel function was noted after probiotics use as probiotics and placebo had similar follow-up low anterior resection syndrome scores (33.3 vs 36).
CONCLUSION
Transanal irrigation was associated with improvement in low anterior resection syndrome according to 2 trials, and ramosetron showed promising short-term results in one trial. Posterior tibial nerve stimulation had a marginal benefit compared with standard care. In contrast, pelvic floor training was associated with short-term symptomatic improvement, and probiotics showed no tangible improvement in low anterior resection syndrome symptoms. Firm conclusions cannot be drawn due to the small number of trials published.
Topics: Humans; Low Anterior Resection Syndrome; Postoperative Complications; Rectal Neoplasms; Randomized Controlled Trials as Topic
PubMed: 37012144
DOI: 10.1016/j.surg.2023.02.010 -
European Journal of Surgical Oncology :... Aug 2019To investigate the ovarian survival (OS) after ovarian transposition (OT) and pelvic radiation.
OBJECTIVE
To investigate the ovarian survival (OS) after ovarian transposition (OT) and pelvic radiation.
DESIGN
Systematic review. Electronic databases were searched to identify studies on OT prior to external beam radiation therapy (EBRT, to the pelvic). Primary outcome was the ovarian function after radiotherapy and ovarian transposition. Secondary outcomes were complication-rate. Only studies in English, German or French were included.
SETTING
Not applicable.
PATIENTS
Fertile women undergoing ovarian transposition prior to pelvic radiation therapy.
INTERVENTIONS
We included all studies, containing >5 patients, treated with OT prior to radiation therapy.
MAIN OUTCOME MEASURE
Ovarian function.
RESULTS
Our search yielded a total of 1130 studies of which 38 were eligible with a total of 765 patients. All studies were cohort studies or case-series. Heterogeneity among studies could not be rejected hence meta-analysis could not be performed. OS after OT and EBRT ranged from 20% to 100%. The median follow-up ranged from 7 to 102 months. OS was higher after OT and brachytherapy (OS 63.6-100%) when compared to OT and EBRT (20-100%) and OT concomitant chemoradiotherapy (0-69.2%). Only 22 studies (with 112 patients) reported on complications: among these studies the complication-rate was 0%-28.6%.
CONCLUSION
From our systematic review of literature we conclude that the preservation of ovarian function after OT prior to EBRT is successful in 20-100% of patients. Most favorable outcome with regard to preservation of ovarian function is seen in patients after OT and BT, followed by OT and EBRT and OT and RT combined with chemotherapy.
Topics: Aged; Brachytherapy; Female; Humans; Middle Aged; Ovarian Function Tests; Ovary; Pelvic Neoplasms; Radiation Injuries; Radiotherapy Dosage; Recovery of Function; Risk Assessment
PubMed: 30857878
DOI: 10.1016/j.ejso.2019.02.017 -
Zhonghua Fu Chan Ke Za Zhi Jun 2014To evaluate the current status and outcomes of pelvic exenteration (PE) for recurrent cervical cancer. (Review)
Review
OBJECTIVE
To evaluate the current status and outcomes of pelvic exenteration (PE) for recurrent cervical cancer.
METHODS
The following electronic databases has been searched on recurrent cervical cancer management and treatment:Chinese Biological Medicine Disk (CBM), PubMed and Cochrane library. All retrieved studies had to fulfill the following inclusion criteria: cohort studies of recurrent cervical cancer, containing information of detailed patient and operation characteristics as well as the survival rate. Only publications in the English literature were included. All eligible literatures between Jan. 1990 and Aug. 2013 were assessed for quality. Relevant basic characteristics, complications, survival rate and prognostic factors were reviewed.
RESULTS
There were eight trials involving 607 patients with cervical cancer received PE, including 515 cases with recurrent disease and 92 cases with primary disease. Four hundred and ninety patients had received total pelvic exenteration (TPE) operation, 103 underwent anterior pelvic exenteration (APE) and 14 received posterior pelvic exenteration (PPE). The 5-year overall survival rate for recurrent cervical cancer fluctuate from 26.7% to 56.0%. Complication rates were from 34.3% to 83.3% and the mortality rate was 1.2% (7/607). Among the relevant factors affecting survival time, resection margin status seemed to be the most important.
CONCLUSION
Based on this systematic review, PE does help improve the survival of recurrent cervical cancer patients on the basis of strict selection of candidates.
Topics: Female; Humans; Neoplasm Recurrence, Local; Pelvic Exenteration; Postoperative Complications; Survival Analysis; Survival Rate; Uterine Cervical Neoplasms
PubMed: 25169641
DOI: No ID Found -
Annals of Surgery Feb 2017The aim of this study was to assess resection margin status and its impact on survival after abdominoperineal excision and pelvic exenteration for primary or recurrent... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
The aim of this study was to assess resection margin status and its impact on survival after abdominoperineal excision and pelvic exenteration for primary or recurrent rectal cancer.
SUMMARY OF BACKGROUND DATA
Resection margin is important to guide therapy and to evaluate patient prognosis.
METHODS
A meta-analysis was performed to assess the impact of resection margin status on survival, and a regression analysis to analyze positive resection margin rates reported in the literature.
RESULTS
The analysis included 111 studies reporting on 19,607 participants after abdominoperineal excision, and 30 studies reporting on 1326 participants after pelvic exenteration. The positive resection margin rates for abdominoperineal excision were 14.7% and 24.0% for pelvic exenteration. The overall survival and disease-free survival rates were significantly worse for patients with positive compared with negative resection margins after abdominoperineal excision [hazard ratio (HR) 2.64, P < 0.01; HR 3.70, P < 0.01, respectively] and after pelvic exenteration (HR 2.23, P < 0.01; HR 2.93, P < 0.01, respectively). For patients undergoing abdominoperineal excision with positive resection margins, the reported tumor sites were 57% anterior, 15% posterior, 10% left or right lateral, 8% circumferential, 10% unspecified. A significant decrease in positive resection margin rates was identified over time for abdominoperineal excision. Although positive resection margin rates did not significantly change with the size of the study, some small size studies reported higher than expected positive resection margin rates.
CONCLUSIONS
Resection margin status influences survival and a multidisciplinary approach in experienced centers may result in reduced positive resection margins. For advanced anterior rectal cancer, posterior pelvic exenteration instead of abdominoperineal excision may improve resection margins.
Topics: Abdomen; Humans; Margins of Excision; Pelvic Exenteration; Perineum; Rectal Neoplasms; Rectum; Survival Analysis; Treatment Outcome
PubMed: 27537531
DOI: 10.1097/SLA.0000000000001963 -
Central European Journal of Urology 2018To determine the effectiveness and safety of extended pelvic lymphadenectomy compared with standard lymphadenectomy in the overall, cancer-specific survival and... (Review)
Review
INTRODUCTION
To determine the effectiveness and safety of extended pelvic lymphadenectomy compared with standard lymphadenectomy in the overall, cancer-specific survival and biochemical recurrence-free survival of patients with localized prostate cancer who underwent radical prostatectomy.
MATERIAL AND METHODS
Clinical trials and cohort studies were included without language restrictions with the following participants: men older than 40 years of age diagnosed with localized prostate cancer who received radical prostatectomy plus pelvic lymphadenectomy. Standard vs. extended pelvic lymphadenectomy were compared. The primary outcomes were overall and cancer-specific survival. A search strategy in MEDLINE, EMBASE, CENTRAL, LILACS, and other databases was conducted to obtain published and unpublished literature. The risk of bias was evaluated with the Cochrane Collaboration tool. The statistical analysis was performed in STATA 14.
RESULTS
Six studies were included, of which only one was experimental; the other studies were cohort studies. The surgical technique was robot-assisted in three studies. Two studies only had information concerning the adverse effects. It was not possible to include one clinical trial that met the criteria because an erratum was published in which falsification of the experimental data was proven. There was a biochemical recurrence-free survival hazard ratio (HR) = 0.62 and a 95% confidence interval (CI) (0.36 to 0.87).
CONCLUSIONS
According to current literature, a mild difference was evident favoring the extended lymphadenectomy in biochemical recurrence-free survival. Additionally, there was no evidence to draw a conclusion regarding the overall survival since we did not find any studies concerning this outcome.
PubMed: 30386645
DOI: 10.5173/ceju.2018.1703 -
Annals of Surgical Oncology Jul 2017We evaluated the effect of the extent of pelvic lymph node dissection (PLND) on oncological and functional outcomes in patients with intermediate- to high-risk prostate... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
We evaluated the effect of the extent of pelvic lymph node dissection (PLND) on oncological and functional outcomes in patients with intermediate- to high-risk prostate cancer (PCa) by conducting a systematic review and meta-analysis.
METHODS
Two independent researchers performed a systematic review of radical prostatectomy (RP) with extended PLND (ePLND), and RP with standard (sPLND) or limited PLND (lPLND) in patients with PCa using the PubMed, EMBASE, and Cochrane Library databases and using the terms 'prostatectomy', 'lymph node excision', and 'prostatic neoplasm'. The primary outcome was biochemical-free survival, which was analyzed by extracting survival data from the published Kaplan-Meier (KM) curves. In addition, we obtained summarized survival curves by reconstructing the KM data. Secondary outcomes of the recovery of erection and continence were also analyzed.
RESULTS
Nine studies involving over 1554 patients were included, one of which was a randomized controlled trial. The pooled analysis showed a significant difference in biochemical recurrence between ePLND and sPLND (hazard ratio 0.71, 95% confidence interval 0.56-0.90, p = 0.005), with no significant between-study heterogeneity (I = 37%). From the summary survival curves, it can be observed that the curves for the two groups diverged more and more as a function of time. From the analyses of functional outcomes including only three studies, no statistically significant differences in the recovery of erectile function and continence were observed. No evidence of significant publication bias was found.
CONCLUSIONS
In patients with PCa, ePLND could be an oncological benefit; however, a functional compromise cannot be determined.
Topics: Humans; Lymph Node Excision; Lymph Nodes; Male; Medical Oncology; Pelvis; Prognosis; Prostatectomy; Prostatic Neoplasms; Survival Rate
PubMed: 28271172
DOI: 10.1245/s10434-017-5822-6 -
Annals of Surgical Oncology May 2016Abdominopelvic cancer surgery increases the risk of postoperative venous thromboembolism (VTE). Low-molecular-weight heparin (LMWH) thromboprophylaxis is recommended,... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Abdominopelvic cancer surgery increases the risk of postoperative venous thromboembolism (VTE). Low-molecular-weight heparin (LMWH) thromboprophylaxis is recommended, and the role of extended thromboprophylaxis (ETP) is controversial. We performed a systematic review to determine the effect of ETP on deep vein thrombosis (DVT), pulmonary embolism (PE), major bleeding, and all-cause mortality after abdominal or pelvic cancer surgery.
METHODS
A search of the MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials was undertaken, and studies were included if they compared extended duration (2-6 weeks) with conventional duration of thromboprophylaxis (2 weeks or less) after cancer surgery. Pooled relative risk (RR) was estimated using a random effects model.
RESULTS
Seven randomized and prospective studies were included, comprising 4807 adult patients. ETP was associated with a significantly reduced incidence of all VTEs [2.6 vs. 5.6 %; RR 0.44, 95 % confidence interval (CI) 0.28-0.70, number needed to treat (NNT) = 39] and proximal DVT (1.4 vs. 2.8 %; RR 0.46, 95 % CI 0.23-0.91, NNT = 71). There was no statistically significant difference in the incidence of symptomatic PE (0.8 vs. 1.3 %; RR 0.56, 95 % CI 0.23-1.40), major bleeding (1.8 vs. 1.0 %; RR 1.19, 95 % CI 0.47-2.97), and all-cause mortality (4.2 vs. 3.6 %; RR 0.79, 95 % CI 0.47-1.33). None of the outcomes differed if randomized trials were analyzed independently.
CONCLUSIONS
ETP after abdominal or pelvic surgery for cancer significantly decreased the incidence of all VTEs and proximal DVTs, but had no impact on symptomatic PE, major bleeding, or 3-month mortality. ETP should be routinely considered in the setting of abdominal and pelvic surgery for cancer patients.
Topics: Abdominal Neoplasms; Adult; Anticoagulants; Chemoprevention; Heparin, Low-Molecular-Weight; Humans; Pelvic Neoplasms; Postoperative Complications; Venous Thromboembolism
PubMed: 26887853
DOI: 10.1245/s10434-016-5127-1