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This clinical review examines Barrett's esophagus and esophageal adenocarcinoma, detailing definition, diagnosis, epidemiology, and risk factors, while emphasizing contested issues. It summarizes the Barrett's-to-carcinoma progression, discusses relevant molecular pathways, including inflammatory, pepsin-exposure, growth-factor and mitochondrial changes, and describes surveillance strategies using serial endoscopy with shorter intervals for high-risk features.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/cancer-risk-in-barretts-esophagus-a-clinical-review/405538/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/cancer-risk-in-barretts-esophagus-a-clinical-review/405538.png","ImageObject",300,407,{"name":92,"@type":93},"Ivy","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-31","2026-09-28",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why is Barrett's esophagus considered important for esophageal adenocarcinoma risk?","Question",{"text":112,"@type":113},"Barrett's esophagus is described as a known precursor to esophageal adenocarcinoma, and the progression from Barrett's esophagus to cancer is reviewed in detail. The article links this progression to molecular and inflammatory processes.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How do diagnostic definitions of Barrett's esophagus differ across medical societies?",{"text":117,"@type":113},"The article notes that some guidelines require intestinal metaplasia on biopsy, while others do not. It also explains that the presence of goblet cells is not the only marker considered and that diagnostic criteria vary by region.",{"name":119,"@type":110,"acceptedAnswer":120},"What does the review identify as drivers of progression from Barrett's esophagus to cancer?",{"text":121,"@type":113},"Progression is likely influenced by inflammatory pathways, pepsin exposure, upregulation of growth-factor pathways, and mitochondrial changes. These mechanisms are discussed alongside the need for histologic assessment of dysplasia.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},405538,1790842534,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},549758252649,"https://ap-avatar.wpscdn.com/avatar/8000253669c5317157?_k=1778319167496531819","Review  \nCancer Risk in Barrett's Esophagus: A Clinical Review  \nAhmed Sam Beydoun 1, Kaleigh A. Stabenau 1, Kenneth W. Altman 2 and Nikki Johnston 1, *  \nCitation: Beydoun, A.S.; Stabenau, K.A.; Altman, K.W.; Johnston, N. Cancer Risk in Barrett's Esophagus:  \nA Clinical Review. Int. J. Mol. Sci. 2023, 24, 6018. [https://doi.org/](https://doi.org/)[ ](https://doi.org/)[10.3390/ijms24076018](10.3390/ijms24076018)  \nAcademic Editor: Alfred King-Yin Lam  \nReceived: 10 February 2023  \nRevised: 21 March 2023  \nAccepted: 21 March 2023  \nPublished: 23 March 2023  \nCopyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ([https://](https://)[ ](https://)[creativecommons.org/licenses/by/](creativecommons.org/licenses/by/)[ ](creativecommons.org/licenses/by/)[4.0/](4.0/)) .  \n1 Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI 53226, USA  \n2 Department of Otolaryngology-Head & Neck Surgery, Geisinger Medical Center, Danville, PA 17822, USA  \n* [Correspondence: njohnston@mcw.edu](Correspondence: njohnston@mcw.edu)  \nAbstract: Esophageal adenocarcinoma (EAC) is rapidly increasing in incidence and is associated with a poor prognosis. Barrett's esophagus (BE) is a known precursor of esophageal adenocarcinoma. This review aims to explore Barrett's esophagus, esophageal adenocarcinoma, and the progression from the former to the latter. An overview of the definition, diagnosis, epidemiology, and risk factors for both entities are presented, with special attention being given to the areas of debate in the literature. The progression from Barrett's esophagus to esophageal adenocarcinoma is reviewed and the relevant molecular pathways are discussed. The definition of Barrett's esophagus remains debated and without international consensus. This, alongside other factors, has made establishing the true prevalence of Barrett's esophagus challenging. The degree of dysplasia can be a histological challenge, but is necessary to guide clinical management. The progression of BE to EAC is likely driven by inflammatory pathways, pepsin exposure, upregulation of growth factor pathways, and mitochondrial changes. Surveillance is maintained through serial endoscopic evaluation, with shorter intervals recommended for high-risk features.  \nKeywords: Barrett's esophagus; esophageal adenocarcinoma; gastroesophageal reflux disease; cancer; RNA sequencing; molecular pathways  \n1. Introduction  \nBarrett's esophagus (BE) is defined by the American College of Gastroenterology (ACG) as intestinal metaplasia (IM) of the distal esophageal squamous epithelium and is a known precursor to esophageal adenocarcinoma (EAC) [1] . Although the true prevalence is difficult to ascertain, approximately two percent of adults are affected by BE, with 0.5–1% going on to develop EAC per year [2] . Gastroesophageal reflux disease (GERD) is thought to be a pathologic driver behind BE, yet 40% of patients diagnosed with BE report no symptoms of GERD at the time of diagnosis [3] .  \nEAC is characterized by a strong male predominance, with a rapidly increasing incidence in the West, now surpassing the incidence of esophageal squamous cell carcinoma (ESCC) in several European, North American, and Oceanic countries [4] . Incidence increases with age, and certain genetic factors may play a role in the development of EAC from BE. The prognosis of EAC is strongly related to the stage at the time of diagnosis; however, due to most cases being diagnosed with the late-stage disease, the prognosis is poor, with a 20% overall survival rate at five years.  \nThe purpose of this review is to summarize the current literature regarding EAC risk in patients with BE and to highlight the unanswered questions regarding these topics for future research.  \n2. Materials and Methods  \nA literature search of the Ovid Medline/Pub","cbCainRh9yRvAdaQ","https://ap.wps.com/l/cbCainRh9yRvAdaQ","pdf",634380,17,"English","# Abstract\n# Introduction\n# Materials and Methods\n# Definition and Diagnosis\n## Diagnostic criteria and controversies\n## Role of intestinal metaplasia and goblet cells\n## Guideline differences across societies","[{\"question\":\"Why is Barrett's esophagus considered important for esophageal adenocarcinoma risk?\",\"answer\":\"Barrett's esophagus is described as a known precursor to esophageal adenocarcinoma, and the progression from Barrett's esophagus to cancer is reviewed in detail. The article links this progression to molecular and inflammatory processes.\"},{\"question\":\"How do diagnostic definitions of Barrett's esophagus differ across medical societies?\",\"answer\":\"The article notes that some guidelines require intestinal metaplasia on biopsy, while others do not. It also explains that the presence of goblet cells is not the only marker considered and that diagnostic criteria vary by region.\"},{\"question\":\"What does the review identify as drivers of progression from Barrett's esophagus to cancer?\",\"answer\":\"Progression is likely influenced by inflammatory pathways, pepsin exposure, upregulation of growth-factor pathways, and mitochondrial changes. These mechanisms are discussed alongside the need for histologic assessment of dysplasia.\"}]","Cancer Risk in Barrett's Esophagus - A Clinical Review | PDF",1790560483,43]