Publications by authors named "Dinis-Ribeiro M"

Of all new cases of colorectal cancer, Lynch syndrome (LS) accounts for approximately 3%. This syndrome is the most common hereditary cancer syndrome and is caused by pathogenic variants in the genes responsible for DNA mismatch repair. Although the relationship between colorectal cancer risk and diet is well established, little is known regarding the influence of diet and nutritional characteristics on LS's clinical evolution.

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Background & Aims: Colorectal cancer (CRC) ranks second globally in cancer-related deaths and there is ongoing debate on the best populational screening strategy. This study aimed to evaluate individuals' intention to adhere to CRC screening, screening method preference, and barriers to screening.

Methods: Cross-sectional study conducted in northern Portugal, where a populational fecal occult blood test (FOBT) program is implemented.

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Background/objectives: Robust evidence regarding the management after endoscopic resection of malignant colorectal polyps (MCP) is lacking. Inconsistencies in reporting on potential prognostic factors hinder the decision process. To address these issues, the Scottish Screen-detected Polyp Cancer Study (SSPoCS) introduced an algorithm based in two easily obtainable variables: resection margin and lymphovascular invasion.

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Objective: Ampullary neoplastic lesions can be resected by endoscopic papillectomy (EP) or transduodenal surgical ampullectomy (TSA) while pancreaticoduodenectomy is reserved for more advanced lesions. We present the largest retrospective comparative study analysing EP and TSA.

Design: Of all patients in the database, lesions with prior interventions, benign histology advanced malignancy (T2 and more), patients with hereditary syndromes and those undergoing pancreatoduodenectomy were excluded.

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Several techniques exist to maintain oral and/or enteral feeding among esophageal cancer (EC) patients, but their impact on patient-reported outcomes (PROs) remains unclear. This systematic review aimed to assess the impact of nutritional support techniques on PROs in EC patients. We searched Medline, Web of Science, and CINAHL Complete from inception to 3 April 2024.

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Article Synopsis
  • AI has the potential to improve gastrointestinal endoscopy, but standardized methods are needed for its effective adoption in clinical practice.
  • The QUAIDE Explanation and Checklist was created by a panel of 32 experts to provide guidelines for designing and reporting AI studies in this field.
  • Consensus was achieved on 18 recommendations across key areas including data collection, outcome reporting, experimental setup, and result presentation, aiming to enhance research consistency and facilitate the use of AI in clinical settings.
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Background:  Mucosal visualization during upper gastrointestinal (UGI) endoscopy can be impaired by the presence of foam, bubbles, and mucus. Some UGI endoscopy visibility scales have been proposed but have not undergone multicenter validation. This study aimed to develop and validate the Gastroscopy RAte of Cleanliness Evaluation (GRACE) scale.

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Article Synopsis
  • The integration of artificial intelligence in medical diagnostics significantly enhances the management of upper gastrointestinal cancer, particularly gastric cancer, where early detection is crucial.
  • Foundation models (FMs) are advanced machine learning tools that improve the accuracy of endoscopic procedures and pathology image analysis.
  • This review discusses the principles, emerging trends, and challenges in implementing FMs in clinical practice, aiming to guide researchers and healthcare professionals in improving patient outcomes related to gastric cancer.
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Background And Aims: Gastric cancer (GC) is the third cause of cancer mortality worldwide. A screening strategy that combines an upper gastrointestinal endoscopy (UGIE) with a screening colonoscopy may be cost-effective in intermediate-risk regions. This study aimed to evaluate the intention to adhere to combined endoscopic screening and assess knowledge of GC symptoms, risk factors, and barriers to screening.

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Background: Adenoma detection rate (ADR) is a quality indicator set at a minimum of 25% in unselected populations by the European Society of Gastrointestinal Endoscopy (ESGE). Nevertheless, a lack of pooled observational data resembling real-world practice limits support for this threshold. We aimed to perform a systematic review with meta-analysis to evaluate the pooled rates for conventional adenoma detection, polyp detection (PDR), cecal intubation, bowel preparation, and complications in population-based studies.

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Background: Early gastric cancer is treated endoscopically, but patients require surveillance due to the risk of metachronous gastric lesions (MGLs). Epigenetic alterations, particularly aberrant DNA methylation in genes, such as MIR124-3, MIR34b/c, NKX6-1, EMX1, MOS and CDO1, have been identified as promising biomarkers for MGL in Asian populations. We aimed to determine whether these changes could predict MGL risk in intermediate-risk Caucasian patients.

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Background:  Piecemeal endoscopic mucosal resection (EMR) is an acceptable technique for T1a esophageal adenocarcinoma, but en bloc R0 excision is advocated for T1b disease as it may offer a potential cure and mitigate recurrence. Thus, distinguishing between T1a and T1b disease is imperative under current treatment paradigms. We investigated whether expert Barrett's endoscopists could make this distinction based on optical evaluation.

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Background And Aims: Limited evidence exists regarding the impact of glucagon-like peptide-1 receptor agonists (GLP-1RAs) on upper endoscopy. Therefore, a meta-analysis was conducted to comprehensively review the available evidence on this subject.

Methods: A systematic bibliographic search was carried out until May 2024.

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Article Synopsis
  • A study evaluated the effectiveness of ChatGPT in answering questions about colorectal cancer (CRC) screening to improve patient awareness and adherence to screening programs.
  • 15 CRC screening questions were assessed by experts and patients, focusing on accuracy, completeness, and comprehensibility.
  • ChatGPT performed well, especially with patients, but highlighted the need for further training to align its responses with scientific evidence and guidelines.
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Objective: During the last decade, the management of gastric intestinal metaplasia (GIM) has been addressed by several distinct international evidence-based guidelines. In this review, we aimed to synthesise these guidelines and provide clinicians with a global perspective of the current recommendations for managing patients with GIM, as well as highlight evidence gaps that need to be addressed with future research.

Design: We conducted a systematic review of the literature for guidelines and consensus statements published between January 2010 and February 2023 that address the diagnosis and management of GIM.

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Article Synopsis
  • The study investigated the impact of narrow safety margins during gastric endoscopic submucosal dissection (ESD) on the rate of local recurrence.
  • A retrospective analysis showed a 3% recurrence rate, with higher occurrences in cases where the horizontal safety margin was less than 1mm.
  • Despite the trends indicating narrow margins correlate with more recurrences, the findings weren't statistically significant, but highlighted the need for close monitoring, especially for patients with certain margin conditions.
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Introduction/aim: Gastric neuroendocrine tumors (GNETs) frequently have an indolent clinical course, despite their metastatic potential. The aim of the study was to identify prognostic factors associated with overall survival and risk of metastases and to evaluate the impact of serial measurements of chromogranin A (CgA).

Methods: The authors performed a retrospective cohort study including consecutive patients with GNET diagnosed between 2010 and 2019, with a minimum follow-up of 1 year.

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Introduction: Endoscopic Submucosal Dissection (ESD) has been reported as a feasible and effective treatment for Rectal Neuroendocrine Tumours (R-NETs). However, most of the experience on the topic comes from retrospective tertiary centre from Eastern Asia. Data on ESD for R-NETs in Western centres are lacking.

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1:  ESGE recommends cold snare polypectomy (CSP), to include a clear margin of normal tissue (1-2 mm) surrounding the polyp, for the removal of diminutive polyps (≤ 5 mm).Strong recommendation, high quality of evidence. 2:  ESGE recommends against the use of cold biopsy forceps excision because of its high rate of incomplete resection.

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Colorectal cancer (CRC) screening relies primarily on stool analysis to identify occult blood. However, its sensitivity for detecting precancerous lesions is limited, requiring the development of new tools to improve CRC screening. Carcinogenesis involves significant alterations in mucosal epithelium glycocalyx that decisively contribute to disease progression.

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At the end of the last century, a far-sighted 'working party' held in Sydney, Australia addressed the clinicopathological issues related to gastric inflammatory diseases. A few years later, an international conference held in Houston, Texas, USA critically updated the seminal Sydney classification. In line with these initiatives, Kyoto Global Consensus Report, flanked by the Maastricht-Florence conferences, added new clinical evidence to the gastritis clinicopathological puzzle.

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Background: Pan-intestinal capsule endoscopy (PCE) evaluates the small bowel and colon noninvasively. This study evaluated diagnostic accuracy and safety of PCE vs. colonoscopy as first-line examination in suspected mid-lower gastrointestinal bleeding (MLGIB).

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