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Frontiers in Surgery 2023It was aimed at assessing the benefits of adjuvant chemotherapy (ACT) for patients with node-negative colorectal cancer (CRC) either with or without perineural invasion... (Review)
Review
PURPOSE
It was aimed at assessing the benefits of adjuvant chemotherapy (ACT) for patients with node-negative colorectal cancer (CRC) either with or without perineural invasion (PNI).
METHODS
We systematically searched PubMed, Cochrane Library, Embase, and Web of Science from database inception through October 1, 2023. Survival outcomes were analyzed using hazard ratios (HRs) and corresponding 95% confidence intervals (CIs). The methodological quality of included studies was assessed using the Newcastle-Ottawa Scale (NOS). Heterogeneity for the descriptive meta-analyses was quantified using the statistic.
RESULTS
Ten studies included in this review. ACT improved overall survival (OS) (HR 0.52, 95% CI 0.40-0.69) and disease-free survival (DFS) (HR 0.53, 95% CI 0.35-0.82) in PNI + patients but did not affect DFS (HR 1.13, 95% CI 0.72-1.77) in PNI- patients. A disease-specific survival (DSS) benefit with chemotherapy was observed in PNI + (HR 0.76, 95% CI 0.58-0.99) and PNI- patients (HR 0.76, 95% CI 0.57-1.00). And PNI decreased DFS (HR 1.94, 95% CI 1.52-2.47) and OS (HR 1.75, 95% CI 0.96-3.17) in node-negative CRC.
CONCLUSIONS
In conclusion, chemotherapy appears most beneficial for survival outcomes in node-negative patients with PNI, but may also confer some advantage in those without PNI.
SYSTEMATIC REVIEW REGISTRATION
Identifier INPLASY2021120103.
PubMed: 38033531
DOI: 10.3389/fsurg.2023.1308757 -
International Journal of Cancer Oct 2023
Meta-Analysis
Topics: Humans; Papillomavirus Infections; Early Detection of Cancer; Biomarkers; Cytodiagnosis; Anus Neoplasms; Papillomaviridae; HIV Infections
PubMed: 37401650
DOI: 10.1002/ijc.34641 -
Journal of Medical Imaging and... Sep 2023Anal squamous cell carcinoma (ASCC) has a generally acceptable outlook in terms of survival. 18-fluorodeoxyglucose-positron emission tomography/computer tomography (FDG... (Meta-Analysis)
Meta-Analysis
Anal squamous cell carcinoma (ASCC) has a generally acceptable outlook in terms of survival. 18-fluorodeoxyglucose-positron emission tomography/computer tomography (FDG PET-CT) is not recommended for routine monitoring post-ASCC treatment. We examine herein if FDG PET-CT has a use in the prognostic evaluation of patients with ASCC, what FDG PET-CT metrics are of value and if a pre- or post-chemo/radiotherapy scan is more prognostic of outcomes. PubMed, EMBASE and Cochrane Central Registry of Controlled Trials were comprehensively searched until 3 May, 2023. A modified Newcastle Ottawa scale was used to assess for study bias. We present our systematic review alongside pooled hazard ratios (HR) for maximum standardised uptake values (SUV) as a predictor of overall survival (OS) and progression-free survival (PFS). Seven studies including 523 patients were included in our systematic review. Current evidence suggests that SUV maximum and median, metabolic tumour volume, total lesion glycolysis and complete and partial metabolic response may be prognostic when considering overall or progression-free survival (OS)/(PFS) along with local recurrence (LR). Pooled HR from two included studies indicate SUV max is prognostic of OS, HR 1.179, CI (1.039-1.338), P = 0.011 and PFS 1.176, CI (1.076-1.285), P < 0.01. FDG PET-CT may have a role to play in the prognostic evaluation of ASCC patients. Current evidence suggests post-treatment scanning may hold superior prognostic value at this time.
Topics: Humans; Positron Emission Tomography Computed Tomography; Fluorodeoxyglucose F18; Positron-Emission Tomography; Carcinoma, Squamous Cell; Prognosis; Anus Neoplasms; Retrospective Studies; Radiopharmaceuticals
PubMed: 37573606
DOI: 10.1111/1754-9485.13566 -
The American Surgeon Mar 2024The management of anal cancer relies on clinical and histopathological features for treatment decisions. In recent years, the field of radiomics, which involves the... (Review)
Review
INTRODUCTION
The management of anal cancer relies on clinical and histopathological features for treatment decisions. In recent years, the field of radiomics, which involves the extraction and analysis of quantitative imaging features, has shown promise in improving management of pelvic cancers. The aim of this study was to evaluate the current application of radiomics in the management of anal cancer.
METHODS
A systematic search was conducted in Medline, EMBASE, and Web of Science databases. Inclusion criteria encompassed randomized and non-randomized trials investigating the use of radiomics to predict post-operative recurrence in anal cancer. Study quality was assessed using the QUADAS-2 and Radiomics Quality Score tools.
RESULTS
The systematic review identified a total of nine studies, with 589 patients examined. There were three main outcomes assessed in included studies: recurrence (6 studies), progression-free survival (2 studies), and prediction of human papillomavirus (HPV) status (1 study). Radiomics-based risk stratification models were found to provide valuable insights into treatment response and patient outcomes, with all developed signatures demonstrating at least modest accuracy (range: .68-1.0) in predicting their primary outcome.
CONCLUSION
Radiomics has emerged as a promising tool in the management of anal cancer. It offers the potential for improved risk stratification, treatment planning, and response assessment, thereby guiding personalized therapeutic approaches.
Topics: Humans; Radiomics; Anus Neoplasms; Databases, Factual; Postoperative Period
PubMed: 37972216
DOI: 10.1177/00031348231216494 -
International Journal of Molecular... Apr 2024This systematic review investigates the potential of circulating tumour DNA (ctDNA) as a predictive biomarker in the management and prognosis of squamous cell carcinoma... (Review)
Review
This systematic review investigates the potential of circulating tumour DNA (ctDNA) as a predictive biomarker in the management and prognosis of squamous cell carcinoma of the anal canal (SCCA). PubMed, EMBASE, and Cochrane Central Registry of Controlled Trials were searched until 7 January 2024. Selection criteria included research articles exploring ctDNA in the context of anal cancer treatment response, recurrence risk assessment, and consideration of salvage surgery. A total of eight studies were therefore included in the final review, examining a total of 628 patients. These studies focused on three main themes: SCCA diagnosis and staging, treatment response, and patient outcomes. Significant heterogeneity was observed in terms of patient cohort, study methodology, and ctDNA biomarkers. Four studies provided information on the sensitivity of ctDNA biomarkers in SCCA, with a range of 82-100%. Seven studies noted a correlation between pre-treatment ctDNA levels and SCCA disease burden, suggesting that ctDNA could play a role as a biomarker for the staging of SCCA. Across all seven studies with paired pre- and post-treatment ctDNA samples, a trend was seen towards decreasing ctDNA levels post-treatment, with specific identification of a 'fast elimination' group who achieve undetectable ctDNA levels prior to the end of treatment and may be less likely to experience treatment failure. Residual ctDNA detection post-treatment was associated with poorer patient prognosis. This systematic review identifies the broad potential of ctDNA as a useful and decisive tool in the management of SCCA. Further analysis of ctDNA biomarkers that include larger patient cohorts is required in order to clearly evaluate their potential role in clinical decision-making processes.
Topics: Humans; Circulating Tumor DNA; Anus Neoplasms; Biomarkers; Carcinoma, Squamous Cell
PubMed: 38612815
DOI: 10.3390/ijms25074005 -
European Journal of Surgical Oncology :... Jan 2024(Chemo)radiation may be a required treatment in young women with pelvic malignancies. Irradiation may result in ovarian and uterine failure, compromising the fertility... (Review)
Review
Uterine transposition versus uterine ventrofixation before radiotherapy as a fertility sparing option in young women with pelvic malignancies: Systematic review of the literature and dose simulation.
BACKGROUND
(Chemo)radiation may be a required treatment in young women with pelvic malignancies. Irradiation may result in ovarian and uterine failure, compromising the fertility of those patients. While ovarian transposition is an established method to move the ovaries away from the irradiation field, similar surgical procedures regarding the uterus remain investigational. The aim of this study was to carry out a systematic review of the literature on uterine displacement techniques (ventrofixation/transposition) and to simulate the radiation dose received by the uterus in different heights place after the procedures.
METHODS
The systematic review was performed according PRISMA guidelines. PubMed, Scopus, Web of Science and EMBASE were queried to identify included study until March 2023. Retrospectively, a dosimetric study was also performed and Volumetric Modulated Arc Therapy (VMAT) radiotherapy treatment plans were calculated, to assess the dose received by the uterus according to hypothetical different displacement positions taking the case of irradiation for rectal or anal cancer as model.
RESULTS
A total of 187 studies were included, after the screening 9 studies were selected for synthesis. Data from the dose simulation revealed that the transposition approach was the most protective with a maximum dose of about 3 and 8 Gy for anal and rectal cancer respectively. None of the simulated ventrofixation positions received a Dmean surpassing 14 Gy.
CONCLUSION
According to the literature review and the simulation results of the present study we may conclude are feasible and safe as fertility sparing approach in young rectal/anal cancer patients.
Topics: Humans; Female; Pelvic Neoplasms; Retrospective Studies; Uterus; Organ Sparing Treatments; Radiotherapy, Intensity-Modulated; Radiotherapy Dosage; Radiotherapy Planning, Computer-Assisted; Anus Neoplasms
PubMed: 37992415
DOI: 10.1016/j.ejso.2023.107270 -
European Journal of Pediatric Surgery :... Jun 2024This systematic review and meta-analysis of nonrandomized studies (NRSs) aimed to evaluate the clinical efficacy and safety of two types of surgical interventions... (Meta-Analysis)
Meta-Analysis Comparative Study
This systematic review and meta-analysis of nonrandomized studies (NRSs) aimed to evaluate the clinical efficacy and safety of two types of surgical interventions (respectively drainage alone and drainage with primary fistula treatment) for perianal abscesses (PAs) in children. Studies from 1992 to July 2022 were searched in 10 electronic databases. All relevant NRSs with available data which compared surgical drainage with or without primary fistula treatment were included. Patients with underlying diseases which led to abscess formation were excluded. The Newcastle-Ottawa Scale was used to assess the risk of bias and quality of the included studies. The outcomes were the healing rate, fistula formation rate, fecal incontinence, and wound healing duration. A total of 16 articles with 1,262 patients were considered suitable for the final meta-analysis. Primary fistula treatment was associated with a significantly higher healing rate when compared with incision and drainage alone (odds ratio [OR]: 5.76, 95% confidence interval [CI]: 4.04-8.22). This aggressive procedure for PA resulted in an 86% reduction in the fistula formation rate (OR: 0.14, 95% CI: 0.06-0.32). Limited data showed patients who underwent primary fistula treatment have a minor effect on postoperative fecal incontinence. Primary fistula treatment demonstrates a better clinical efficacy in promoting the healing rate and decreasing the formation of fistulas in PAs in children. The available evidence for a minor impact on anal function after this intervention is less strong.
Topics: Humans; Drainage; Child; Abscess; Rectal Fistula; Anus Diseases; Fecal Incontinence; Treatment Outcome; Wound Healing
PubMed: 37023788
DOI: 10.1055/a-2070-3613 -
Scientific Reports Nov 2023Chronic anal fissure is one of the most common benign anorectal health conditions, causing significant morbidity, quality of life, and economic loss. Eight randomized... (Meta-Analysis)
Meta-Analysis
Chronic anal fissure is one of the most common benign anorectal health conditions, causing significant morbidity, quality of life, and economic loss. Eight randomized controlled trials with a total population size of 1035 were eligible for analysis. Seven studies included both males and female, while one only included females. The majority of randomized controlled trials involved female dominance [54.9% (43.5-66.3)] and posterior midline location [86.1% (95% CI 81.5-90.8%)]. This meta-analysis of randomised control trials found that overall postoperative healing was 90.2%, recurrent anal fissure was 3.7%, and postoperative incontinence was 8.9% after LIS. Even though there was no statistically significant difference, closed lateral internal sphincterotomy (LIS) had higher rates of recurrent anal fissure (RR = 1.73 (95% CI 0.86-3.47, p = 0.90, I2 = 0%) and lower rates of postoperative incontinence rate (RR = 0.60 (95% CI 0.37-0.96, p = 0.76, I2-0) as compared with open LIS. We recommended that closed lateral internal sphincterotomy (LIS) is a safe and effective surgical treatment option for chronic anal fissures.
Topics: Female; Humans; Male; Anal Canal; Chronic Disease; Fissure in Ano; Lateral Internal Sphincterotomy; Quality of Life; Treatment Outcome; Randomized Controlled Trials as Topic
PubMed: 38017243
DOI: 10.1038/s41598-023-48286-z