Optimal upper gastrointestinal surveillance strategies for gastric, small bowel and pancreatic cancer detection in Lynch syndrome

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Abstract
Lynch syndrome is an autosomal dominant cancer predisposition syndrome and the most common cause of hereditary colorectal cancer. In addition to colorectal cancer, it confers substantially increased risks for several extracolonic malignancies. While there is broad consensus regarding the effectiveness of endoscopic colorectal surveillance, recommendations for surveillance of gastric, small bowel, and pancreatic cancers vary considerably among guidelines issued by leading professional societies. These discrepancies largely reflect the limited availability of robust, high-quality evidence. In this narrative review, we summarize the cancer risks for gastric, small bowel, and pancreatic malignancies in Lynch syndrome carriers, discuss recent studies evaluating the outcomes of surveillance strategies, and provide an overview of current guideline recommendations. Furthermore, we highlight emerging approaches that may enhance surveillance strategies in the future. In recent years, increasing research efforts have focused on surveillance for less frequent Lynch syndrome-associated malignancies, however, prospective data from large, well-characterized cohorts remain scarce. Such data are essential to harmonize existing guidelines and to enable the development of personalized surveillance strategies for individuals affected by Lynch syndrome.
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  • Universitätsklinikum Bonn

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