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Tarao K, Nozaki A, Komatsu H, Ideno N, Komatsu T, Ikeda T, Taguri M, Maeda S. Difference in incidence of developing hepatocellular carcinoma between hepatitis B virus-and hepatitis C virus-infected patients. World J Meta-Anal 2022; 10:186-194. [DOI: 10.13105/wjma.v10.i3.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/14/2022] [Accepted: 06/27/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND It is generally accepted that the incidence of hepatocellular carcinoma (HCC) in hepatitis C virus (HCV)-associated patients is higher than that in hepatitis B virus (HBV)-associated patients. The reason why this difference in the incidence of HCC occurs in patients with HBV and HCV infections remains unclear. We report the possibility that the contributing power of inflammation, which is the main risk factor for developing HCC, may be different with HBV and HCV infections.
AIM To investigate this, we surveyed the hazard ratio of inflammation for HCC development which was identified by serum alanine aminotransferase (ALT) levels between patients with HBV and HCV infections.
METHODS The PubMed database was searched (2001-2021) for studies published in English regarding the incidence of HCC identifying 8924 HBV-and 7376 HCV- infected patients. From these studies, interferon-treated patients with both HBV and HCV infections were excluded. Furthermore, in HBV patients, those administered nucleos(t)ide analogues were excluded, and in HCV patients, those administered direct acting antivirals were also excluded. Studies citing hazard ratios of HCC regarding inflammation (serum elevated alanine aminotransferase levels) were selected. Finally, there were 14 studies of HBV- infected patients and 8 studies of HCV-infected patients. We calculated the hazard ratio in patients in an inflammatory state (serum ALT levels were above the normal range).
RESULTS In the 14 studies of HBV patients, the average hazard ratio (HR) of elevated ALT for developing HCC was 2.74 [1.98-3.77] and that in the 8 studies of HCV-infected patients was 5.51 [3.08-9.83]. The HR of inflammation for HCC development in HCV-associated liver diseases is about twice that in HBV-associated liver diseases. HR in HCV-infected patients was significantly (P = 0.0391) higher than that in HBV-infected patients. In hepatitis B patients, the abnormal range adopted was 28-45 IU/L, and in hepatitis C patients, it was 20-50 IU/L. It was demonstrated that the abnormal ALT levels adopted in hepatitis B and C patients were very similar in this series.
CONCLUSION The difference in the incidence of HCC development between HBV and HCV patients may depend on the difference in the hazard risk of ALT between HBV and HCV infections.
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Meta-Analysis |
3 |
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177
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Jona James J, Al-Dadah O. Ankle injuries in athletes: A review of the literature. World J Meta-Anal 2021; 9:128-138. [DOI: 10.13105/wjma.v9.i2.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 03/26/2021] [Accepted: 04/23/2021] [Indexed: 02/06/2023] Open
Abstract
Ankle injuries are commonplace in the athletic population, with lateral ligament sprains accounting for the majority of them. The medial ligament complex, the distal tibiofibular syndesmosis as well as any of the bones that constitute the ankle joint can also be injured. Typical mechanisms of injury include inversion-plantarflexion and external rotation on a supinated, dorsiflexed or pronated foot. Lesions of the ankle present with similar symptoms of pain, swelling and tenderness. Therefore, a thorough history and physical examination must be obtained to make the correct diagnosis. This is especially critical for athletes as certain injuries can lead to termination of their career if not treated accurately on time. Imaging may be useful in some cases to confirm or rule out differential diagnoses. Most injuries can be managed conservatively using the Protection, Rest, Ice, Compression and Elevation protocol followed by a comprehensive rehabilitation programme. Surgery is reserved for grade III ligament tears that are refractory to initial non-operative treatment and displaced fractures that are unlikely to unite without surgical intervention. The objective of this review is to discuss the common ankle injuries encountered in the athletic population and the approaches to their diagnosis and management.
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Minireviews |
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178
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Sivrika A, Sivrika P, Morakis A, Lamnisos D, Georgoudis G, Stasinopoulos D. Is Pilates an effective tool for the management of kinesiophobia in musculoskeletal disorders? World J Meta-Anal 2024; 12:96981. [DOI: 10.13105/wjma.v12.i4.96981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Revised: 07/07/2024] [Accepted: 09/11/2024] [Indexed: 12/12/2024] [Imported: 12/12/2024] Open
Abstract
BACKGROUND Kinesiophobia is a common condition often manifested in patients with musculoskeletal disorders within the process of rehabilitation. Recently, the literature has been investigating whether Pilates could contribute to the management of kinesiophobia in various musculoskeletal disorders. However, aggregated data regarding its effectiveness are absent from literature.
AIM To evaluate recordings of the Pilates method in kinesiophobia related to musculoskeletal disorders.
METHODS PubMed, ScienceDirect, Scopus and Pedro databases were all scrutinized for randomized controlled trials, by two or more intervention groups, where at least one group received a Pilates-based intervention and which had been conducted in patients aged 18-65 years with musculoskeletal disorders, having assessed at least one outcome related to kinesiophobia. The systematic review was based on the PRISMA guidelines.
RESULTS We have identified five studies, with a total of 366 patients with musculoskeletal disorders. Three of them showed that a Pilates-based intervention by either mat or equipment can combat kinesiophobia in patients with musculoskeletal conditions, while another showed that Pilates exercises with equipment may have better long-term effects on kinesiophobia compared to Pilates mat.
CONCLUSION Overall, a strong level of research evidence has been amassed for the Pilates intervention as well as a moderate level of research evidence for the effectiveness of equipment-based Pilates in reducing kinesiophobia in patients with musculoskeletal disorders. While the underlying mechanisms driving such a result remain unknown, it appears that Pilates can influence both biological and psychological factors in musculoskeletal disorders, thus resulting in the management of kinesiophobic behaviours.
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Systematic Reviews |
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179
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Shamliyan TA, Avanesova AA. Russian clinical research policy does not guarantee results availability. World J Meta-Anal 2014; 2:154-161. [DOI: 10.13105/wjma.v2.i4.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 08/11/2014] [Accepted: 09/10/2014] [Indexed: 02/05/2023] Open
Abstract
AIM: To investigate results availability from clinical studies enrolling Russian subjects and Russian clinical research policy.
METHODS: We analyzed Russian legislation and ethical regulations about drug and devices approval, clinical research registration and the results availability. In August 2012, we searched International Clinical Trials Registry Platform and clinicaltrials.gov to find all registered studies that had an investigational site in the territory of the Russian Federation. To find publication status, we searched the PubMed and Scirus bibliographical databases with trial registration number to find journal publications of the registered studies.
RESULTS: We identified 2062 registered research protocols comprising 2017 international and 45 protocols sponsored by the Russian funding agencies. The number of the studies enrolling Russian subjects increased dramatically from three studies in 2002 to 252 studies in 2012. Most studies (92%) were funded exclusively by industry, were interventions (94.6%), examined drugs (87%) and enrolled exclusively adults (86%) of both genders (89%). Only 383 (19%) of multinational studies and two (4.4%) of exclusively Russian studies were published. Posting of patient outcomes was available for 16% of the trials that recruited trial participants in the Russian territory including one study funded exclusively by Russian sponsors. Investigators terminated 99 studies of 38111 participants and did not provide the results in clinicaltrials.gov or in published manuscripts. Federal laws require clinical study registration and conflict of interest disclosure. However, routine monitoring of compliance to clinical research policy is not available.
CONCLUSION: Russian legislation does not guarantee the availability of clinical research results. Russian legislation should mandate transparent evidence- based market approval of the drugs and devices.
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Evidence-Based Medicine |
11 |
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180
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Balaram K, Ahmed M, Marwaha R. Review of the effects of SARS-CoV2 infection and COVID-19 on common pediatric psychiatric illnesses. World J Meta-Anal 2021; 9:455-461. [DOI: 10.13105/wjma.v9.i5.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/14/2021] [Accepted: 10/20/2021] [Indexed: 02/06/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus-2 is a novel coronavirus strain that causes pneumonia and acute respiratory distress syndrome along with other morbidities, collectively known as coronavirus disease 2019 (COVID-19) disease. There has been widespread discussion about the psychological impact of COVID-19 particularly on children and adolescents. There have been overarching negative effects with regards to decreased physical activity, more screen time, increasingly unhealthy diets, and irregularities in sleep/wake schedules. This, coupled with disruptions in ongoing mental health treatment and associated support structures, has caused unprecedented declines in the emotional and psychosocial wellbeing of children and adolescents. This review aims to systematically review the literature to provide a general overview of the ways in which COVID-19 has affected common psychiatric illnesses in children and adolescents. The included articles in all subsections concluded that symptoms of these common childhood psychiatric disorders have generally been exacerbated by the COVID-19 pandemic. This review indicates that quarantine and the consequent isolation have had multiple significant and consistent negative implications on the mental health of children and adolescents. Our study indicates that there should be increased vigilance among providers and families to mitigate the negative psychological effects that the COVID-19 pandemic has on children with common childhood psychiatric disorders.
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Minireviews |
4 |
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181
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Lee PN, Coombs KJ, Hamling JS. Evidence relating cigarettes, cigars and pipes to cardiovascular disease and stroke: Meta-analysis of recent data from three regions. World J Meta-Anal 2023; 11:290-312. [DOI: 10.13105/wjma.v11.i6.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 09/13/2023] [Imported: 09/13/2023] Open
Abstract
BACKGROUND More recent data are required relating to disease risk for use of various smoked products and of other products containing nicotine. Earlier we published meta-analyses of recent results for chronic obstructive pulmonary disease and lung cancer on the relative risk (RR) of current compared to never product use for cigarettes, cigars and pipes based on evidence from North America, Europe and Japan. We now report corresponding up-to-date evidence for acute myocardial infarction (AMI), ischaemic heart disease (IHD) and stroke.
AIM To estimate, using recent data, AMI, IHD and stroke RRs by region for current smoking of cigarettes, cigars and pipes.
METHODS Publications in English from 2015 to 2020 were considered that, based on epidemiological studies in the three regions, estimated the current smoking RR of AMI, IHD or stroke for one or more of the three products. The studies should involve at least 100 cases of stroke or cardiovascular disease (CVD), not be restricted to populations with specific medical conditions, and should be of cohort or nested case-control study design or randomized controlled trials. A literature search was conducted on MEDLINE, examining titles and abstracts initially, and then full texts. Additional papers were sought from reference lists of selected papers, reviews and meta-analyses. For each study identified, we entered the most recent available data on current smoking of each product, as well as the characteristics of the study and the RR estimates. Combined RR estimates were derived using random-effects meta-analysis for stroke and, in the case of CVD, separately for IHD and AMI. For cigarette smoking, where far more data were available, heterogeneity was studied by a wide range of factors. For cigar and pipe smoking, a more limited heterogeneity analysis was carried out. A more limited assessment of variation in risk by daily number of cigarettes smoked was also conducted. Results were compared with those from previous meta-analyses published since 2000.
RESULTS Current cigarette smoking: Ten studies gave a random-effects RR for AMI of 2.72 [95% confidence interval (CI): 2.40-3.08], derived from 13 estimates between 1.47 and 4.72. Twenty-three studies gave an IHD RR of 2.01 (95%CI: 1.84-2.21), using 28 estimates between 0.81 and 4.30. Thirty-one studies gave a stroke RR of 1.62 (95%CI: 1.48-1.77), using 37 estimates from 0.66 to 2.91. Though heterogeneous, only two of the overall 78 RRs were below 1.0, 71 significantly (P < 0.05) exceeding 1.0. The heterogeneity was only partly explicable by the factors studied. Estimates were generally higher for females and for later-starting studies. They were significantly higher for North America than Europe for AMI, but not the other diseases. For stroke, the only endpoint with multiple Japanese studies, RRs were lower there than for Western studies. Adjustment for multiple factors tended to increase RRs. Our RR estimates and the variations by sex and region are consistent with earlier meta-analyses. RRs generally increased with amount smoked. Current cigar and pipe smoking: No AMI data were available. One North American study reported reduced IHD risk for non-exclusive cigar or pipe smoking, but considered few cases. Two North American studies found no increased stroke risk with exclusive cigar smoking, one reporting reduced risk for exclusive pipe smoking (RR 0.24, 95%CI: 0.06-0.91). The cigar results agree with an earlier review showing no clear risk increase for IHD or stroke.
CONCLUSION Current cigarette smoking increases risk of AMI, IHD and stroke, RRs being 2.72, 2.01 and 1.62. The stroke risk is lower in Japan, no increase was seen for cigars/pipes.
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Meta-Analysis |
2 |
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182
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Pal P, Mateen MA, Pooja K, Rajadurai N, Gupta R, Tandan M, Duvvuru NR. Role of intestinal ultrasound in ulcerative colitis: A systematic review. World J Meta-Anal 2024; 12:97210. [DOI: 10.13105/wjma.v12.i3.97210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 08/07/2024] [Accepted: 08/14/2024] [Indexed: 09/13/2024] [Imported: 09/13/2024] Open
Abstract
BACKGROUND Intestinal ultrasound (IUS) is an emerging, non-invasive, and highly sensitive diagnostic tool in inflammatory bowel disease (IBD), including ulcerative colitis (UC). Despite its potential, its adoption in clinical practice is limited due to a lack of standardization and awareness.
AIM To perform a comprehensive scoping review based on a systematic literature review on IUS in UC to inform current practice.
METHODS Ninety-nine original articles about ultrasonography in UC were identified among 7608 citations searching PubMed and EMBASE databases for systematic review.
RESULTS IUS can be useful as an initial diagnostic strategy in patients with suspected IBD/UC. In UC, IUS can predict endoscopic response, histologic healing, and steroid responsiveness in acute severe cases. IUS can predict response to biologics/small molecules (as early as 2 wk). IUS correlates well with ileo-colonoscopy, but IUS could miss rectal, jejunal, and upper GI lesions in suspected IBD and colon polyps or extra-intestinal manifestations in known IBD. IUS is useful in special situations (children, pregnancy, and postoperative Crohn's disease). Inter-observer agreement is acceptable and trained physicians have comparable diagnostic accuracy. Point-of-care ultrasound impacted management in 40%-60% of cases. Hand-held IUS has excellent agreement with conventional IUS.
CONCLUSION IUS is a non-invasive, highly sensitive tool in the diagnosis and monitoring of UC, offering excellent patient satisfaction. Point-of-care ultrasound by IBD physicians can significantly impact clinical decision-making.
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Systematic Reviews |
1 |
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183
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Frater JL. Importance of reporting quality: An assessment of the COVID-19 meta-analysis laboratory hematology literature. World J Meta-Anal 2020; 8:309-319. [DOI: 10.13105/wjma.v8.i4.309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/17/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023] Open
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5 |
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184
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Xiang BJ, Huang YH, Jiang M, Dai C. Effects of antithrombotic agents on post-operative bleeding after endoscopic resection of gastrointestinal neoplasms and polyps: A systematic review and meta-analysis. World J Meta-Anal 2020; 8:410-433. [DOI: 10.13105/wjma.v8.i5.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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5 |
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185
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Thosani N. Role of self-expanding metal stents in patients with malignant colorectal obstruction: A systematic review and meta-analysis. World J Meta-Anal 2015; 3:232. [DOI: 10.13105/wjma.v3.i6.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/01/2015] [Accepted: 11/04/2015] [Indexed: 02/05/2023] Open
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186
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Demerdash HM. Weight regain after bariatric surgery: Promoters and potential predictors. World J Meta-Anal 2021; 9:438-454. [DOI: 10.13105/wjma.v9.i5.438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/07/2021] [Accepted: 09/17/2021] [Indexed: 02/06/2023] Open
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187
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dos Santos ESV, de Oliveira GHP, de Moura DTH, Hirsch BS, Trasolini RP, Bernardo WM, de Moura EGH. Endoscopic vs radiologic gastrostomy for enteral feeding: A systematic review and meta-analysis. World J Meta-Anal 2023; 11:277-289. [DOI: 10.13105/wjma.v11.i6.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/17/2023] [Accepted: 06/16/2023] [Indexed: 09/13/2023] [Imported: 09/13/2023] Open
Abstract
BACKGROUND Percutaneous endoscopic gastrostomy (PEG) and percutaneous radiological gastrostomy (PRG) are minimally invasive techniques commonly used for prolonged enteral nutrition. Despite safe, both techniques may lead to complications, such as bleeding, infection, pain, peritonitis, and tube-related complications. The literature is unclear on which technique is the safest.
AIM To establish which approach has the lowest complication rate.
METHODS A database search was performed from inception through November 2022, and comparative studies of PEG and PRG were selected following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. All included studies compared the two techniques directly and provided absolute values of the number of complications. Studies with pediatric populations were excluded. The primary outcome of this study was infection and bleeding. Pneumonia, peritonitis, pain, and mechanical complications were secondary outcomes. The risk of bias was assessed using the Cochrane risk-of-bias tool for randomized trials (RoB2) and we used The Risk of Bias in Nonrandomized Studies (ROBINS-I) to analyze the retrospective studies. We also performed GRADE analysis to assess the quality of evidence. Data on risk differences and 95% confidence intervals were obtained using the Mantel-Haenszel test.
RESULTS Seventeen studies were included, including two randomized controlled trials and fifteen retrospective cohort studies. The total population was 465218 individuals, with 273493 having undergone PEG and 191725 PRG. The only outcome that showed a significant difference was tube related complications in retrospective studies favoring PEG (95%CI: 0.03 to 0.08; P < 0.00001), although this outcome did not show significant difference in randomized studies (95%CI: -0.07 to 0.04; P = 0.13). There was no difference in the analyses of the following outcomes: infection in retrospective (95%CI: -0.01 to 0.00; P < 0.00001) or randomized (95%CI: -0.06 to 0.04; P = 0.44) studies; bleeding in retrospective (95%CI: -0.00 to 0.00; P < 0.00001) or randomized (95%CI: -0.06 to 0.02; P = 0.43) studies; pneumonia in retrospective (95%CI: -0.04 to 0.00; P = 0.28) or randomized (95%CI: -0.09 to 0.11; P = 0.39) studies; pain in retrospective (95%CI: -0.05 to 0.02; P < 0.00001) studies; peritonitis in retrospective (95%CI: -0.02 to 0.01; P < 0.0001) studies.
CONCLUSION PEG has lower levels of tube-related complications (such as dislocation, leak, obstruction, or breakdown) when compared to PRG.
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Meta-Analysis |
2 |
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188
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Yamana I, Fujikawa T, Kawamura Y, Hasegawa S. Current approach for Boerhaaves syndrome: A systematic review of case reports. World J Meta-Anal 2023; 11:112-124. [DOI: 10.13105/wjma.v11.i4.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/07/2023] [Accepted: 04/06/2023] [Indexed: 04/14/2023] [Imported: 07/06/2023] Open
Abstract
BACKGROUND There is no consensus on the appropriate therapeutic strategy for Boerhaave syndrome due to its rarity and changing therapeutic approaches. We conducted a systematic review of case reports documenting Boerhaave syndrome.
AIM To assess the therapeutic methods and clinical outcomes and discuss the current trends in the management of Boerhaave syndrome.
METHODS We searched PubMed, Google scholar, MEDLINE, and The Cochrane Library for studies concerning Boerhaave syndrome published between 2017 and 2022.
RESULTS Of the included studies, 49 were case reports, including a total of 56 cases. The mean age was 55.8 ± 16 years old. Initial conservative treatment was performed in 25 cases, while operation was performed in 31 cases. The rate of conservative treatment was significantly higher than that of operation in cases of shock vital on admission (9.7% vs 44.0%; P = 0.005). Seventeen out of 25 conservative cases (68.0%) were initially treated endoscopic esophageal stenting; 2 of those 17 cases subsequently underwent operation due to poor infection control. Twelve cases developed postoperative leakage (38.7%), and 4 of those 12 cases underwent endoscopic esophageal stenting to stop the leakage. The length of the hospital stay was not significantly different between the conservative treatment and operation cases (operation vs conservation: 33.52 ± 22.69 vs 38.81 ± 35.28 days; P = 0.553).
CONCLUSION In the treatment of Boerhaave syndrome, it is most important to diagnose the issue immediately. Primary repair with reinforcement is the gold-standard procedure. The indication of endoscopic esophageal stenting or endoluminal vacuum-assisted therapy should always be considered for patients in a poor general condition and who continue to have leakage after repair.
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Systematic Reviews |
2 |
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189
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Qi XS, Yang ZP, Bai M, Wang YJ. Systematic reviews and meta-analyses: Why are they clinically significant? World J Meta-Anal 2015; 3:139-141. [DOI: 10.13105/wjma.v3.i3.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 02/24/2015] [Accepted: 05/27/2015] [Indexed: 02/05/2023] Open
Abstract
This review aims to clarify the clinical significance of systematic reviews and meta-analyses by illustrating several classical examples. Firstly, systematic reviews can provide the highest level of evidence for clinical decisions. Secondly, systematic reviews can propose unresolved issues and future directions. Thirdly, systematic reviews can avoid harm to the human body. Fourthly, systematic reviews can prevent a waste of resources. Generally speaking, clinical researchers should be encouraged to perform systematic reviews and meta-analyses.
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Minireviews |
10 |
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190
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Fu HT, Xu YY, Tian JJ, Fu JX, Nie SL, Tang YY, Chen P, Zong L. Long-term efficacy of capecitabine plus oxaliplatin chemotherapy on stage III colon cancer: A meta-analysis. World J Meta-Anal 2020; 8:27-40. [DOI: 10.13105/wjma.v8.i1.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/26/2019] [Accepted: 10/19/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Many clinical studies for the long-term survival or efficacy of capecitabine plus oxaliplatin (XELOX) in colon cancer have already been studied, but its clinical benefit is controversial.
AIM To evaluate the long-term efficacy of XELOX regimen in comparison with other adjuvant chemotherapy protocols in colon cancer.
METHODS By searching the PubMed, EMBASE and Cochrane databases, a total of 12 randomized controlled trials involving 6698 stage III colon cancer cases (XELOX protocol: n = 3298 cases; other adjuvant chemotherapy protocol: n = 3268 cases) were included. The parameter outcomes included the overall survival and the disease-free survival. The quality control of selected literature was based on the Jadad scale and the GRADE system.
RESULTS In comparison to other adjuvant chemotherapy regimen, XELOX regimen showed a better overall survival (odds ratio = 1.29, 95% confidence interval: 1.15-1.44, P < 0.0001) and a better disease-free survival (odds ratio = 1.32, 95% confidence interval: 1.18-1.46, P < 0.0001) for colon cancer patients, suggesting the XELOX regimen can be a good option for postoperative treatment of stage III colon cancer.
CONCLUSION The XELOX regimen can be a preferred option for adjuvant treatment of stage III colon cancer after surgery.
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Meta-Analysis |
5 |
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191
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de Brito BB, Lemos FFB, Carneiro CDM, Viana AS, Barreto NMPV, Assis GADS, Braga BDC, Santos MLC, Silva FAFD, Marques HS, Silva NOE, de Melo FF. Immune response to Helicobacter pylori infection and gastric cancer development. World J Meta-Anal 2021; 9:257-276. [DOI: 10.13105/wjma.v9.i3.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/24/2021] [Accepted: 06/15/2021] [Indexed: 02/06/2023] Open
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192
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Au SCL. Importance of data collection and subgroup analyses in research methodology. World J Meta-Anal 2025; 13:104382. [DOI: 10.13105/wjma.v13.i2.104382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2024] [Revised: 03/29/2025] [Accepted: 04/11/2025] [Indexed: 06/16/2025] [Imported: 06/16/2025] Open
Abstract
Data collection serves as the cornerstone in the study of clinical research questions. Two types of data are commonly utilized in medicine: (1) Qualitative; and (2) Quantitative. Several methods are commonly employed to gather data, regardless of whether retrospective or prospective studies are used: (1) Interviews; (2) Observational methods; (3) Questionnaires; (4) Investigation parameters; (5) Medical records; and (6) Electronic chart reviews. Each source type has its own advantages and cons in terms of the accuracy and availability of the data to be extracted. We will focus on the important parts of the research methodology: (1) Data collection; and (2) Subgroup analyses. Errors in research can arise from various sources, including investigators, instruments, and subjects, making the validation and reliability of research tools crucial for ensuring the credibility of findings. Subgroup analyses can either be planned before or emerge after (post-hoc) treatment. The interpretation of subgroup effects should consider the interaction between treatment effect and various patient variables with caution.
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Letter to the Editor |
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193
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Fang C, Wu CL, Liu SS, Ge L, Bai JL. Efficacy, safety, and dose comparison of degarelix for the treatment of prostate cancer: A systematic review and meta-analysis. World J Meta-Anal 2016; 4:69-76. [DOI: 10.13105/wjma.v4.i3.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 03/14/2016] [Accepted: 04/22/2016] [Indexed: 02/05/2023] Open
Abstract
AIM: To conduct a systematic review and meta-analysis into the efficacy, safety, and dosage regimens of degarelix for treating prostate cancer (PCa).
METHODS: PubMed, EMBASE, the Cochrane Library, and Web of Science was systematically searched to identify randomized controlled trials (RCTs) comparing degarelix (240/80 mg vs 240/160 mg) to the gonadotropin-releasing hormone agonists, goserelin and leuprolide, for the treatment of PCa. Two independent reviewers screened putative studies, assessed the risk of bias, and then extracted pertinent data. Analyses were performed using Review Manager 5.2.
RESULTS: Seven papers from six RCTs, involving 1204 patients, were identified. The present meta-analysis showed that treatment with 240/160 mg degarelix is more effective and has fewer adverse events (AEs) relative to conventional 240/80 mg regimen. Degarelix significantly decreased International Prostate Symptom Scores [standardized mean differences (SMD) = -0.32, 95%CI: -0.51 to -0.12, P = 0.02] and caused fewer AEs (SMD = -0.28, 95%CI: -0.48 to -0.07, P = 0.008) than goserelin. Degarelix suppressed testosterone and prostate-specific antigen significantly faster than leuprolide.
CONCLUSION: Degarelix is a useful option in the treatment of advanced PCa. Degarelix 240/160 mg regimen was superior to a 240/80 mg regimen. More rigorously designed RCTs are urgently needed to confirm the efficacy of degarelix.
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Meta-Analysis |
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Jin JW, Chen SL, Deng ZT. Association between SHBG (TAAAA)n and AR (CAG)n polymorphisms and PCOS risk: A meta-analysis. World J Meta-Anal 2015; 3:72-81. [DOI: 10.13105/wjma.v3.i1.72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 07/28/2014] [Accepted: 11/03/2014] [Indexed: 02/05/2023] Open
Abstract
AIM: To systematically assess the association between sex hormone-binding globulin (SHBG) (TAAAA)n and androgen receptor (AR) (CAG)n polymorphisms and polycystic ovarian syndrome (PCOS) risk.
METHODS: We searched MEDLINE (PubMed), EMBASE and Web of Science database from inception to May 2014. To avoid missing any additional studies, we looked through all the references of relevant articles. Case-control studies concerning the (CAG)n variants in the AR gene or the (TAAAA)n polymorphism in the SHBG gene in PCOS patients were included. Five studies regarding the (TAAAA)n polymorphism in the SHBG gene and 14 studies regarding the (CAG)n polymorphism in the AR gene met our criteria. Odd ratio (OR) and weighted mean difference (WMD) were selected as the effect size measurements to evaluate the influence of the (TAAAA)n polymorphism and (CAG)n variants on PCOS risk. Begg’s test was used for the evaluation of publication bias.
RESULTS: With respect to the relationship between the (TAAAA)n polymorphism and PCOS risk, the statistical results showed that there was no significant difference between PCOS patients and controls in the alleles of TAAAA (S: OR = 0.91, 95%CI: 0.78-1.05; L: OR = 1.10, 95%CI: 0.95-1.27). Subgroup analyses of the combination of alleles indicated similar results (short-short: OR = 0.87, 95%CI: 0.66-1.14; short-long: OR = 1.12, 95%CI: 0.86-1.46; long-long: OR = 1.03, 95%CI: 0.72-1.47). As for the relationship between the (CAG)n polymorphism and PCOS risk, we found no association between CAG repeat variants and PCOS risk (WDM = 0.03, 95%CI: -0.13-0.08). Subgroup analyses by race and diagnosis criteria indicated the same results (Asian: WMD = -0.03, 95%CI: -0.14-0.07; Caucasian: WMD = -0.02, 95%CI: -0.24-0.21; the criteria of Rotterdam: WMD = 0.01, 95%CI: -0.01-0.03).
CONCLUSION: There is no association between (TAAAA)n polymorphism in SHBG gene, (CAG)n repeat variants in AR gene and PCOS.
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Muthu S, Jeyaraman N, Patel K, Chellamuthu G, Viswanathan VK, Jeyaraman M, Khanna M. Evidence analysis on the utilization of platelet-rich plasma as an adjuvant in the repair of rotator cuff tears. World J Meta-Anal 2022; 10:143-161. [DOI: 10.13105/wjma.v10.i3.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 03/23/2022] [Accepted: 06/26/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Platelet-rich plasma has been gaining popularity as an agent for biological augmentation either as the sole treatment modality or as an adjunct to surgical repair. There is substantial discrepancy in the results of the published meta-analyses; and the true efficacy and role of using autologous platelet-rich plasma (PRP) at the time of rotator cuff repair is still ambiguous.
AIM To performed this systematic overview on the overlapping meta-analyses that analyzed autologous PRP as an adjuvant in the repair of rotator cuff tears and identify the studies which provide the current best evidence on this subject and generate recommendations for the same.
METHODS We conducted independent and duplicate electronic database searches in PubMed, Web of Science, Scopus, Embase, Cochrane Database of Systematic Reviews, Reference Citation Analysis and the Database of Abstracts of Reviews of Effects on September 8, 2021 to identify meta-analyses that analyzed the efficacy of PRP as an adjuvant in the repair of rotator cuff tears. Methodological quality assessment was made using Oxford Levels of Evidence, AMSTAR scoring and AMSTAR 2 grades. We then utilized the Jadad decision algorithm to identify the study with the highest quality to represent the current best evidence to generate the recommendation.
RESULTS Twenty meta-analyses fulfilling the eligibility criteria were included. The AMSTAR scores of the included studies varied from 6-10 (mean: 7.9). All the included studies had critically low reliability in their summary of results due to their methodological flaws according to AMSTAR 2 grades. Significant heterogeneity was observed in the reporting of VAS, function outcome scores (long-term UCLA score, ASES score, SST score), operative time and long-term re-tear rates. Recent meta-analyses are more supportive of the role of intra-operative administration of PRPs at the bone-tendon interface in improving the overall healing and re-tear rates, functional outcome and pain. The initial size of the tear and type of repair performed do not seem to affect the benefit of PRPs. Among the different preparations used, leucocyte poor (LP)-PRP possibly offers the greatest benefit as a biological augment in these situations.
CONCLUSION Based on this systematic overview, we give a level II recommendation that intra-operative use of PRPs at the bone-tendon interface can augment the healing rate, reduce re-tears, enhance functional outcome and mitigate pain in patients undergoing arthroscopic rotator cuff repair. LP-PRP possibly offers the greatest benefit in terms of healing rates, as compared with other platelet preparations.
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Meta-Analysis |
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196
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Sami Ullah KR, Xiong YL, Miao YL, Ummair S, Dai W. Thalidomide and thalidomide analogues in treatment of patients with inflammatory bowel disease: Meta-analysis. World J Meta-Anal 2017; 5:124-131. [DOI: 10.13105/wjma.v5.i5.124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 05/05/2017] [Accepted: 07/03/2017] [Indexed: 02/05/2023] Open
Abstract
AIM To examine the efficacy and safety of thalidomide and thalidomide analogues in induction and maintenance of remission in patients with inflammatory bowel disease (IBD).
METHODS A literature search was performed in the following databases: PubMed, EMBASE, Web of Science, Ovid and the Cochrane Library, and Chinese databases such as the China National Knowledge Infrastructure, China Science and Technology Journal Database (VIP), Wanfang Data. The randomized controlled analysis was performed to assess the effects of thalidomide therapy on inflammatory bowel disease for patients who did show good response with other therapies.
RESULTS Three studies (n = 212) met the inclusion criteria were used in this Meta-analysis. No difference was found between thalidomide/thalidomide analogues and placebo in the induction of remission (RR = 1.36, 95%CI: 0.83-2.22, P = 0.22), the induction of clinical response (RR = 1.14, 95%CI: 0.75-1.72, P = 0.54) and the induction of adverse events (RR = 1.41, 95%CI: 0.99-2.02, P = 0.06).
CONCLUSION Currently, there is not enough evidence to support use of thalidomide or its analogue for the treatment in patients of any age with IBD. However, it warrants a reanalysis when more data become available.
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Meta-Analysis |
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Han L, Peck EW, Teo E, See KC. Systematic review comparing the efficacy and safety of covered and uncovered self-expanding metal stents in benign airway stenosis. World J Meta-Anal 2025; 13. [DOI: 10.13105/wjma.v13.i1.100176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2024] [Revised: 01/11/2025] [Accepted: 01/21/2025] [Indexed: 03/14/2025] [Imported: 03/14/2025] Open
Abstract
BACKGROUND
Current United States Food and Drug Administration (FDA) guidelines established since 2005 recommend the usage of silicone stents over metal stents due to the risk of complications associated with the older generation of uncovered stents. Yet, with the advancement of technology, novel innovations of self-expanding metal stents (SEMS) have revolutionized the treatment of benign airway stenosis (BAS), where the insertion of SEMS is known to be easier than silicone stents.
AIM
To compare the efficacy and safety of covered SEMS against uncovered SEMS, and thereafter propose more direct trials comparing covered SEMS against silicone stents for consideration of revision of current FDA guidelines.
METHODS
A comprehensive literature review of MEDLINE and EMBASE was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Of 3002 articles, 64 publications met the eligibility criteria with a total of 900 patients (468 covered SEMS, 432 uncovered SEMS). The collected data were analyzed using Statistical Package for the Social Sciences version 11.5.
RESULTS
Covered SEMS showed a higher success rate of insertion (98.6% vs 88.2%) and lower complication rates of infection (1.3% vs 13.2%), restenosis (1.5% vs 10.6%), stent fracture (2.6% vs 7.4%), bleeding (0% vs 5.8%), and pneumothorax (0% vs 2.8%) compared to uncovered SEMS. However, covered SEMS compared to uncovered SEMS showed higher complication rates of stent migration (12.4% vs 6.9%) and granulation tissue formation (26.5% vs 20.1%).
CONCLUSION
Our study suggests that covered SEMS are an effective, safe, and viable option in the treatment of BAS. Thus, further consideration regarding the utilization of covered SEMS over other forms of stent types is appropriate.
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III AKC, Bague AH. Current trend in the diagnosis and management of malignant pheochromocytoma: Clinical and prognostic factors. World J Meta-Anal 2020; 8:375-382. [DOI: 10.13105/wjma.v8.i5.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 02/06/2023] Open
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Xiang BJ, Huang YH, Jiang M, Dai C. Effects of antithrombotic agents on post-operative bleeding after endoscopic resection of gastrointestinal neoplasms and polyps: A systematic review and meta-analysis. World J Meta-Anal 2020; 8:411-434. [DOI: 10.13105/wjma.v8.i5.411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/07/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023] Open
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Kumble LD, Silver E, Oh A, Abrams JA, Sonett JR, Hur C. Treatment of early stage (T1) esophageal adenocarcinoma: Personalizing the best therapy choice. World J Meta-Anal 2019; 7:406-417. [DOI: 10.13105/wjma.v7.i9.406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/03/2019] [Accepted: 10/19/2019] [Indexed: 02/06/2023] Open
Abstract
Esophagectomy is considered the primary form of management for esophageal adenocarcinoma (EAC); however, the surgery is associated with high rates of morbidity and mortality. For patients with early-stage EAC, endoscopic resection (ER) presents a potential curative treatment option that is less invasive and carries fewer risks procedure related risks, but it is associated with higher rates of cancer recurrence following the procedure. For some patients, age and comorbidities may prevent them from having esophagectomy as a treatment option, while other patients may be operative candidates but do not wish to undergo esophagectomy for a variety of reasons related to their values and preferences. Furthermore, while anxiety of cancer recurrence following ER may significantly diminish a patient’s quality of life (QOL), so might the morbidity surrounding esophagectomy. In addition to considering health status, patient preferences, and impacts on QOL, physicians and patients must also consider what treatments would be both beneficial and available to the patient, considering esophagectomy methods-minimally invasive vs open-or the use of chemoradiotherapy in addition to ER. Our article reviews and summarizes available treatment options for patients with early EAC and their potential effects on the health and wellbeing of patients based on the current data. We conclude with a request for more research of available options for early EAC patients, the conditions that determine when each option should be employed, and their effects not only on patient health but also QOL.
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Review |
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