Histological diagnosis determines the clinical behavior of colorectal polyps. Recently new types of polyps have been described and the classification has become wider and more complex. Our aim is update the current concepts in the knowledge of colorectal polyps.
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Med Image Anal
January 2025
Department of Computer and Data Science and Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA.
Accurate automatic polyp segmentation in colonoscopy is crucial for the prompt prevention of colorectal cancer. However, the heterogeneous nature of polyps and differences in lighting and visibility conditions present significant challenges in achieving reliable and consistent segmentation across different cases. Therefore, this study proposes a novel dynamic spectrum-driven hierarchical learning model (DSHNet), the first to specifically leverage image frequency domain information to explore region-level salience differences among and within polyps for precise segmentation.
View Article and Find Full Text PDFIntroduction: Colorectal non-polypoid lesions (NPLs) are flat, hard-to-detect and mainly right-sided lesions. We aimed to assess the prevalence and endoscopic features of NPLs lesions in a large cohort of screening patients in Northern Italy.
Methods: FIT-positive subjects between 50 and 69 years old who had undergone at least a screening colonoscopy from March 2005 to December 2017 at the Endoscopy Unit of Ferrara were included.
Front Oncol
January 2025
Clinic of Gastroenterology, Nephro-Urology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius, Lithuania.
Introduction: The current understanding of colorectal carcinogenesis is based on the adenoma-carcinoma sequence, where genetics, intestinal microbiota changes and local immunity shifts seem to play the key roles. Despite the emerging evidence of dysbiotic intestinal state and immune-cell infiltration changes in patients with colorectal adenocarcinoma, early and advanced adenoma as precursors of colorectal cancer, and carcinoma as the following progression, are rather less studied. The newly colon-site adapted AI-based analysis of immune infiltrates is able to predict long-term outcomes of colon carcinoma.
View Article and Find Full Text PDFCrohns Colitis 360
January 2025
Department of Pediatrics, Georgetown University, Washington DC, USA.
Background: The prevalence of colorectal cancer (CRC) in patients with ulcerative colitis (UC) is higher than in the general population, in Latin America there is a progressive increase of UC, and information about CRC screening in inflammatory bowel disease (IBD) is scarce. The aim of this study was to analyze the findings of endoscopic surveillance of CRC in patients with IBD according to available technology.
Methods: Multicenter, cross-sectional, analytical study conducted in Latin American countries, in patients with UC, predominantly with more than 8 years of diagnosis and different degrees of disease activity.
Dig Endosc
January 2025
Department of Gastroenterology, Hiroshima University Hospital, Hiroshima, Japan.
Objectives: We aimed to determine the compliance, safety, and acceptance of colon capsule endoscopy (CCE) and small bowel capsule endoscopy (SBCE) in an out-of-clinic setting remotely supported by medical staff.
Methods: We enrolled 30 examinees (24 with CCE and six with SBCE) who had not undergone CE at six gastroenterological centers. All examinees were provided with instructions on equipment and bowel preparations.
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