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Nutricion Hospitalaria 2012Observational studies show that folate levels may be associated with the development of adenomas and colorectal cancer, suggesting that folic acid supplementation may... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Observational studies show that folate levels may be associated with the development of adenomas and colorectal cancer, suggesting that folic acid supplementation may have a preventive effect.
AIM
Systematic review of scientific evidence from randomized placebo-controlled clinical studies to identify the effects of folic acid supplementation on the recurrence of colorectal adenomas.
MATERIAL AND METHODS
Medline via Pubmed systematic review of randomized clinical trials, double-blind and placebo-controlled and references, specifically to evaluate the effect of acid supplementation on the recurrence of colorectal adenomas.
RESULTS
Seven randomized clinical trials that met the inclusion criteria were selected and evaluated for analysis based on pre established criteria.
CONCLUSIONS
The selected studies do not support that folic acid supplementation is beneficial in recurrence of colorectal adenomas. We observed in some studies differences in risk by type of folate suggesting to review the criteria and levels of supplementation in some population subgroups with higher risks.
Topics: Adenoma; Animals; Colorectal Neoplasms; Dietary Supplements; Folic Acid; Hematinics; Humans; Neoplasm Recurrence, Local; Randomized Controlled Trials as Topic
PubMed: 22566300
DOI: 10.1590/S0212-16112012000100003 -
Diseases of the Colon and Rectum Sep 2019The impact of virtual chromoendoscopy such as narrow-band imaging, Fujinon intelligent chromoendoscopy, blue-light imaging, linked-color imaging, and i-SCAN on adenoma... (Meta-Analysis)
Meta-Analysis
BACKGROUND
The impact of virtual chromoendoscopy such as narrow-band imaging, Fujinon intelligent chromoendoscopy, blue-light imaging, linked-color imaging, and i-SCAN on adenoma detection rate has been variable. However, adenoma miss rate (another measure suggested as a quality indicator) of electronic chromoendoscopy modalities has not been systematically evaluated.
OBJECTIVES
This study aimed to perform a systematic review and meta-analysis to examine the adenoma miss rate of white-light endoscopy compared with electronic chromoendoscopy.
DATA SOURCES
Medline, Embase, Scopus, Web of Knowledge, and Cochrane were the data sources for this study.
STUDY SELECTION
The studies selected were tandem randomized controlled trials of electronic chromoendoscopy modalities compared with white-light endoscopy.
INTERVENTIONS
Electronic chromoendoscopy compared with white light endoscopy was used to measure the adenoma miss rate.
MAIN OUTCOME MEASURES
Primary outcome was the pooled adenoma miss rate of electronic chromoendoscopy techniques compared with white-light endoscopy. Secondary outcomes were subgroup analysis, adenoma size analysis, and adenoma detection rate.
RESULTS
A total of 3507 patients were evaluated from 7 eligible tandem randomized control trials. A total of 1423 patients had white-light endoscopy as the first of the tandem examinations. The rest of the patients had electronic chromoendoscopy as the first of the tandem examination (narrow-band imaging, 988 patients; Fujinon intelligent chromoendoscopy, 728 patients; i-SCAN, 233 patients; blue-light imaging, 64 patients; and linked-color imaging, 71 patients). The pooled adenoma miss rate for electronic chromoendoscopy was not different than white-light endoscopy (17.9% vs 21%; OR, 0.72 (0.67-1.11); I 67%; p = 0.13). When only narrow-band imaging, blue-light imaging, and linked-color imaging were considered, the pooled rate was statistically significant (OR, 0.60 (0.37-0.98); p = 0.04). The pooled adenoma detection rate was not statistically different with electronic chromoendoscopy than white-light endoscopy (OR, 1.02 (0.88-1.19); p = 0.78).
LIMITATIONS
The small number of studies to assess the impact of each modality limited stratified conclusions.
CONCLUSIONS
Electronic chromoendoscopy is not associated with a significant reduction in adenoma miss rate compared with white-light colonoscopy.
Topics: Adenoma; Colonic Neoplasms; Colonoscopy; Diagnostic Errors; Humans; Image Enhancement
PubMed: 31162375
DOI: 10.1097/DCR.0000000000001419 -
The Journal of Contemporary Dental... Sep 2021To examine the clinical signs, radiographical features, and demographics of pediatric pleomorphic adenoma (PA) in the minor salivary glands.
AIM AND OBJECTIVE
To examine the clinical signs, radiographical features, and demographics of pediatric pleomorphic adenoma (PA) in the minor salivary glands.
MATERIALS AND METHODS
Several databases were searched for relevant studies. The included studies were assessed for methodological quality. Demographic, clinical, and radiographic data were collected.
RESULTS
Sixteen of 3,121 articles met the inclusion criteria (17 lesions). The mean age was 9.7 ± 3.9 years and majority were females = 10 (59%). It is commonly presented as asymptomatic swelling = 16 (94.1%), in the hard palate 13 (76.5%). Radiographically, most were well-defined = 15 (93.7%) and 8 (47%) caused erosion or displacement of surrounding tissues.
CONCLUSION
The small size and asymptomatic nature of pediatric PA can render these lesions undiagnosed. On rare occurrences, PA can show calcifications, MRI, or CT enhancement. MRI is the best imaging modality to depict soft tissue content but not subtle erosion of adjacent bony structures.
CLINICAL SIGNIFICANCE
The dentist can be the first to detect PA in the mouth of a child. Augmenting clinical examination with radiographic examination is paramount to ensure adequate diagnosis of PA, examine effects on surrounding bone, and maintain close follow-up as watchful waiting is not safe in this population.
Topics: Adenoma, Pleomorphic; Adolescent; Child; Child, Preschool; Female; Humans; Palate, Hard; Salivary Gland Neoplasms; Salivary Glands, Minor
PubMed: 35000954
DOI: No ID Found -
Surgical Endoscopy Sep 2020Colonoscopies are effective means of detecting and removing precancerous adenomatous polyps. The adenoma detection rate (ADR) is a marker of colonoscopy quality and an... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Colonoscopies are effective means of detecting and removing precancerous adenomatous polyps. The adenoma detection rate (ADR) is a marker of colonoscopy quality and an independent predictor of colorectal cancer incidence. Focused training interventions may improve an endoscopist's ADR, but the supporting research is limited. This systematic review and meta-analysis identified, critically appraised, and meta-analyzed data from randomized trials (RCTs) evaluating the effect of training interventions on ADRs.
METHODS
Ovid Medline, EMBASE, CENTRAL, Eric, CINAHL, Scopus, Web of Science, and ClinicalTrials.gov were searched for RCTs investigating the effect of an educational intervention on ADRs. Two reviewers independently screened, identified, and extracted trial-level data. Internal validity was assessed in duplicate using the Risk of Bias tool. Our primary outcome was the ADR. Secondary outcomes were advanced ADR, adenocarcinoma detection rate, polyp detection rate, and withdrawal times. Safety outcomes were post-polypectomy bleeding rate and colonoscopy-related perforation rate.
RESULTS
From 2837 screened citations, we identified 3 trials (119 endoscopists) meeting our inclusion criteria. Training interventions were associated with a trend toward increased ADRs (odds ratio 1.16, 95% confidence interval (CI) 1.00-1.34; I 83%; 3 trials; 119 endoscopists). When limited to screening colonoscopies, the odds ratio for ADRs associated with training interventions was 1.17 (95% CI 1.00-1.36; I 80%; 3 trials; 119 endoscopists). There was a high level of heterogeneity between the trials' training interventions. Training intervention improved the advanced ADR, adenocarcinoma detection rate, polyp detection rate, and withdrawal times. Safety outcomes were not reported.
CONCLUSIONS
A focused training intervention was associated with a strong trend toward increased ADRs among certified endoscopists. While the described training interventions definitely show promise, further efforts around continuing professional developments activities are needed to more consistently improve ADRS among certified endoscopists.
Topics: Adenoma; Clinical Trials as Topic; Colonic Neoplasms; Colonoscopy; Female; Humans; Male; Middle Aged; Odds Ratio; Polyps; Publication Bias; Risk; Treatment Outcome
PubMed: 31595401
DOI: 10.1007/s00464-019-07153-7 -
Clinical Gastroenterology and... Sep 2022Colonoscopy quality indicators provide measurable assessments of performance, but significant provider-level variations exist. We performed a systematic review and... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND & AIMS
Colonoscopy quality indicators provide measurable assessments of performance, but significant provider-level variations exist. We performed a systematic review and meta-analysis to assess whether endoscopist specialty is associated with adenoma detection rate (ADR) - the primary outcome - or cecal intubation rate, adverse event rates, and post-colonoscopy colorectal cancer rates.
METHODS
We searched EMBASE, Google Scholar, MEDLINE, and the Cochrane Central Registry of Controlled Trials from inception to December 14, 2020. Two reviewers independently screened titles and abstracts. Citations underwent duplicate full-text review, with disagreements resolved by a third reviewer. Data were abstracted in duplicate. The DerSimonian and Laird random effects model was used to calculate pooled odds ratios (ORs) with respective 95% confidence intervals (CIs). Risk of bias was assessed using Risk of Bias in Non-randomised Studies of Interventions.
RESULTS
Of 11,314 citations, 36 studies representing 3,500,832 colonoscopies were included. Compared with colonoscopies performed by gastroenterologists, those by surgeons were associated with lower ADRs (OR, 0.81; 95% CI, 0.74-0.88) and lower cecal intubation rates (OR, 0.76; 95% CI, 0.63-0.92). Compared with colonoscopies performed by gastroenterologists, those by other (non-gastroenterologist, non-surgeon) endoscopists were associated with lower ADRs (OR, 0.91; 95% CI, 0.87-0.96), higher perforation rates (OR, 3.02; 95% CI, 1.65-5.51), and higher post-colonoscopy colorectal cancer rates (OR, 1.23; 95% CI, 1.14-1.33). Substantial to considerable heterogeneity existed for most analyses, and overall certainty in the evidence was low according to the Grading of Recommendations, Assessment, Development, and Evaluations framework.
CONCLUSION
Colonoscopies performed by surgeons or other endoscopists were associated with poorer quality metrics and outcomes compared with those performed by gastroenterologists. Targeted quality improvement efforts may be warranted.
Topics: Adenoma; Cecum; Colonoscopy; Colorectal Neoplasms; Gastroenterologists; Humans
PubMed: 34450297
DOI: 10.1016/j.cgh.2021.08.029 -
PloS One 2024Colorectal adenomas have the potential of malignant transformation if left untreated. Multiple randomized controlled trials have been performed to evaluate the efficacy... (Meta-Analysis)
Meta-Analysis
Colorectal adenomas have the potential of malignant transformation if left untreated. Multiple randomized controlled trials have been performed to evaluate the efficacy of aspirin in preventing colorectal adenoma recurrence in a population with a history of colorectal adenoma but not colorectal cancer, however, the relationship between aspirin dose and colorectal adenoma recurrence remains unclear. We conducted pairwise meta-analysis, meta-regression, trial sequential analysis, and network meta-analysis of all eligible studies. The ROB 2.0 tool was used to assess the risk of bias in the studies. The confidence in network meta-analysis (CINeMA) approach was used to evaluate the confidence of the network meta-analysis results. The network meta-analysis included eight RCTs (nine reports), comprising four on aspirin (low or high dose) alone and four on aspirin combined with another medication, all compared with placebo. In the network meta-analysis, low-dose aspirin (LDA <300 mg per day) was more effective than high-dose aspirin (HDA ≥300 mg per day) and placebo, with risk ratios of 0.76 (95% CI: 0.58 to 0.99) and 0.7 (95% CI: 0.54 to 0.91), respectively. LDA was the optimal treatment relative to HDA and placebo (P-score = 0.99). In the trial sequential analysis, LDA was only more effective than placebo when the number of included participants exceeded the optimal information size; this was not the case for HDA. LDA has statistically significant efficacy for colorectal adenoma prevention, but compared with HDA, its efficacy remains uncertain. Further trials are therefore required.
Topics: Humans; Aspirin; Network Meta-Analysis; Randomized Controlled Trials as Topic; Colorectal Neoplasms; Adenoma
PubMed: 38483854
DOI: 10.1371/journal.pone.0279784 -
Endoscopy Dec 2023Cold snare endoscopic mucosal resection (CS-EMR) can reduce the risks associated with electrocautery during colon polyp resection. Data on efficacy are variable. This... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Cold snare endoscopic mucosal resection (CS-EMR) can reduce the risks associated with electrocautery during colon polyp resection. Data on efficacy are variable. This systematic review and meta-analysis aimed to estimate the pooled efficacy and safety rates of CS-EMR.
METHODS
We conducted a comprehensive literature search of multiple databases, from inception to March 2023, for studies addressing outcomes of CS-EMR for colon polyps. The weighted pooled estimates with 95 %CIs were calculated using the random effects model. statistics were used to evaluate heterogeneity.
RESULTS
4137 articles were reviewed, and 16 studies, including 2592 polyps in 1922 patients (51.4 % female), were included. Overall, 54.4 % of polyps were adenomas, 45 % were sessile serrated lesions (SSLs), and 0.6 % were invasive carcinomas. Polyp recurrence after CS-EMR was 6.7 % (95 %CI 2.4 %-17.4 %, = 94 %). The recurrence rate was 12.3 % (95 %CI 3.4 %-35.7 %, = 94 %) for polyps ≥ 20 mm, 17.1 % (95 %CI 4.6 %-46.7 %, = 93 %) for adenomas, and 5.7 % (95 %CI 3.2 %-9.9 %, = 50 %) for SSLs. The pooled intraprocedural bleeding rate was 2.6 % (95 %CI 1.5 %-4.5 %, = 51 %), the delayed bleeding rate was 1.5 % (95 %CI 0.8 %-2.7 %, = 18 %), and no perforations or post-polypectomy syndromes were reported, with estimated rates of 0.6 % (95 %CI 0.3 %-1.3 %, = 0 %) and 0.6 % (95 %CI 0.3 %-1.4 %, = 0 %), respectively.
CONCLUSION
CS-EMR demonstrated an excellent safety profile for colon polyps, with variable recurrence rates based on polyp size and histology. Large prospective studies are needed to validate these findings.
Topics: Humans; Female; Male; Colonic Polyps; Endoscopic Mucosal Resection; Colonoscopy; Colon; Adenoma; Colorectal Neoplasms
PubMed: 37451284
DOI: 10.1055/a-2129-5752 -
Gastroenterology May 2021The risk of metachronous colorectal cancer (CRC) among patients with no adenomas, low-risk adenomas (LRAs), or high-risk adenomas (HRAs), detected at index colonoscopy,... (Meta-Analysis)
Meta-Analysis
Risk of Colorectal Cancer and Cancer Related Mortality After Detection of Low-risk or High-risk Adenomas, Compared With No Adenoma, at Index Colonoscopy: A Systematic Review and Meta-analysis.
BACKGROUND & AIMS
The risk of metachronous colorectal cancer (CRC) among patients with no adenomas, low-risk adenomas (LRAs), or high-risk adenomas (HRAs), detected at index colonoscopy, is unclear. We performed a systematic review and meta-analysis to compare incidence rates of metachronous CRC and CRC-related mortality after a baseline colonoscopy for each group.
METHODS
We searched the PubMed, Embase, Google Scholar, and Cochrane databases for studies that reported the incidence of CRC and adenoma characteristics after colonoscopy. The primary outcome was odds of metachronous CRC and CRC-related mortality per 10,000 person-years of follow-up after baseline colonoscopy for all the groups.
RESULTS
Our final analysis included 12 studies with 510,019 patients (mean age, 59.2 ± 2.6 years; 55% male; mean duration of follow up, 8.5 ± 3.3 years). The incidence of CRC per 10,000 person-years was marginally higher for patients with LRAs compared to those with no adenomas (4.5 vs 3.4; odds ratio [OR], 1.26; 95% CI, 1.06-1.51; I=0), but significantly higher for patients with HRAs compared to those with no adenoma ( 13.8 vs 3.4; odds ratio [OR], 2.92; 95% CI, 2.31-3.69; I=0 ) and patients with HRAs compared to LRAs (13.81 vs 4.5; OR, 2.35; 95% CI, 1.72-3.20; I=55%). However, the CRC-related mortality per 10,000 person-years did not differ significantly for patients with LRAs compared to no adenomas (OR, 1.15; 95% CI, 0.76-1.74; I=0) but was significantly higher in persons with HRAs compared with LRAs (OR, 2.48; 95% CI, 1.30-4.75; I=38%) and no adenomas (OR, 2.69; 95% CI, 1.87-3.87; I=0).
CONCLUSIONS
The results of this systematic review and meta-analysis demonstrate that the risk of metachronous CRC and mortality is significantly higher for patients with HRAs, but this risk is very low in patients with LRAs, comparable to patients with no adenomas. Follow-up of patients with LRAs detected at index colonoscopy should be the same as for persons with no adenomas.
Topics: Adenoma; Colonoscopy; Colorectal Neoplasms; Humans; Incidence; Risk Factors
PubMed: 33524401
DOI: 10.1053/j.gastro.2021.01.214 -
Endocrine Dec 2023Data on silent corticotroph tumor (SCT) are still heterogeneous and controversial. In this study, we aimed to compare the demographic, clinicopathological... (Meta-Analysis)
Meta-Analysis
INTRODUCTION
Data on silent corticotroph tumor (SCT) are still heterogeneous and controversial. In this study, we aimed to compare the demographic, clinicopathological manifestations, postoperative complications, and patient outcomes of SCTs with other non-functioning pituitary neuroendocrine tumor (NFT) and functioning corticotroph tumor (FCT) or so-called Cushing disease adenoma.
METHODS
We searched PubMed and Web of Science for data of interest. Odds ratio (OR), mean difference (MD), hazard ratio (HR), and their 95% confidence intervals (CI) were pooled using the random-effect model.
RESULTS
Twenty-nine studies with 985 SCTs were included in meta-analyses. In comparison to other NFTs, SCTs were more commonly associated with female gender, younger age, cavernous sinus invasion, apoplexy, and radiotherapy administration. Postoperatively, SCT patients were more likely to experience hypocortisolism, new-onset visual disturbances, and a higher risk for tumor progression than other NFTs. We did not find any significant differences between SCT type I and type II. Compared to FCTs, SCTs were more likely male, older age, and had larger tumor sizes. The prevalence of a USP8 mutation was significantly higher in FCT than in SCT.
CONCLUSION
SCT was demographically, clinicopathologically, and prognostically distinct from other NFTs and FCTs. These tumors should be considered high-risk; appropriate treatment decisions and more stringent follow-up should be tailored to improve patient outcomes.
Topics: Humans; Male; Female; Corticotrophs; Adenoma; Pituitary Neoplasms; Pituitary ACTH Hypersecretion; Prognosis; ACTH-Secreting Pituitary Adenoma
PubMed: 37462809
DOI: 10.1007/s12020-023-03449-w -
Gastrointestinal Endoscopy Aug 2022Current adenoma detection rate (ADR) benchmarks for colonoscopy in individuals positive for a fecal immunochemical test (FIT) are ≥45% in men and ≥35% in women.... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND AND AIMS
Current adenoma detection rate (ADR) benchmarks for colonoscopy in individuals positive for a fecal immunochemical test (FIT) are ≥45% in men and ≥35% in women. These are based on weak, low-quality evidence. We performed a meta-analysis to ascertain the pooled ADR in FIT-positive colonoscopy.
METHODS
Major databases like PubMed, EMBASE, and Web of Science were searched in October 2021 for studies reporting on ADR of colonoscopy in a FIT-positive population. Meta-analysis was performed by standard methodology using the random-effects model. Heterogeneity was assessed by I and 95% prediction interval statistics.
RESULTS
Thirty-four high-quality studies that included more than 6 million asymptomatic average-risk individuals were analyzed; 2,655,345 individuals completed a screening FIT test. The pooled FIT screening rate was 69.8% (95% CI, 62.8-76.1), the pooled FIT positivity rate was 5.4% (95% CI, 4.3-6.9), and the colonoscopy completion rate was 85% (95% CI, 82.8-86.9). The pooled ADR was 47.8% (95% CI, 44.1-51.6), pooled advanced ADR was 25.3% (95% CI, 22-29), and the pooled colorectal cancer detection rate was 5.1% (95% CI, 4.4-5.9). The pooled ADR in men was 58.3% (95% CI, 52.8-63.6) and in women was 41.9% (95% CI, 36.4-47.6). The pooled ADR with qualitative FIT assessment was 67.7% (95% CI, 50.7-81), with 1-stool sample FIT was 52.8% (95% CI, 48.8-56.8), and at a cutoff threshold of 100 ng hemoglobin/mL was 52.1% (95% CI, 47-57.1). Based on time-period cumulative analysis, the ADR improved over time from 30.5% (95% CI, 24.6-37.2) to 47.8% (95% CI, 44.1-51.6).
CONCLUSIONS
This meta-analysis supports the current ADR benchmarks for colonoscopy in FIT-positive individuals. Excellent pooled ADR parameters were demonstrated with qualitative assessment of 1 stool sample at a test cutoff value of 100 ng hemoglobin/mL, and ADR per endoscopist improved over time.
Topics: Adenoma; Colonoscopy; Colorectal Neoplasms; Early Detection of Cancer; Female; Hemoglobins; Humans; Male
PubMed: 35413330
DOI: 10.1016/j.gie.2022.04.004