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  1. Article: Update on Barrett Esophagus Diagnosis and Management.

    Chak, Amitabh

    Gastroenterology & hepatology

    2023  Volume 19, Issue 5, Page(s) 272–274

    Language English
    Publishing date 2023-10-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2386402-3
    ISSN 1554-7914
    ISSN 1554-7914
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  2. Article: Endoscopic advances in gastroenterology.

    Faulx, Ashley L / Chak, Amitabh

    Gastroenterology report

    2023  Volume 11, Page(s) goad046

    Language English
    Publishing date 2023-08-10
    Publishing country England
    Document type Editorial
    ZDB-ID 2710871-5
    ISSN 2052-0034
    ISSN 2052-0034
    DOI 10.1093/gastro/goad046
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  3. Article ; Online: Surveillance in Barrett's Esophagus: Challenges, Progress, and Possibilities.

    Iyer, Prasad G / Chak, Amitabh

    Gastroenterology

    2023  Volume 164, Issue 5, Page(s) 707–718

    Abstract: Endoscopic surveillance of Barrett's esophagus, aiming to detect prevalent dysplasia and adenocarcinoma, followed by effective endoscopic treatment, is an integral part of the esophageal adenocarcinoma prevention paradigm. However, several limitations, ... ...

    Abstract Endoscopic surveillance of Barrett's esophagus, aiming to detect prevalent dysplasia and adenocarcinoma, followed by effective endoscopic treatment, is an integral part of the esophageal adenocarcinoma prevention paradigm. However, several limitations, such as the subtle appearance of dysplasia, sampling error (inherent in current surveillance protocols), and noncompliance with surveillance recommendations, lead to missed dysplasia and neoplasia, reducing the effectiveness of surveillance as currently practiced. Careful endoscopic assessment with high-resolution white-light endoscopy, dye-based or electronic chromoendoscopy, and comprehensive sampling of the BE mucosa, remains the cornerstone of endoscopic surveillance. Emerging innovations in this area span the gamut of more efficient sampling methods, advanced imaging tools, artificial intelligence, and molecular marker-powered approaches as adjuncts, to identify prevalent and predict incident dysplasia or adenocarcinoma. Development and implementation of validated quality indicators will allow additional advancement of this critical field. These approaches will hopefully enable efficient and effective cancer prevention and treatment.
    MeSH term(s) Humans ; Barrett Esophagus/diagnosis ; Barrett Esophagus/epidemiology ; Barrett Esophagus/therapy ; Artificial Intelligence ; Esophageal Neoplasms/diagnosis ; Esophageal Neoplasms/epidemiology ; Esophageal Neoplasms/etiology ; Adenocarcinoma/diagnosis ; Adenocarcinoma/epidemiology ; Adenocarcinoma/prevention & control ; Endoscopy ; Esophagoscopy
    Language English
    Publishing date 2023-02-04
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 80112-4
    ISSN 1528-0012 ; 0016-5085
    ISSN (online) 1528-0012
    ISSN 0016-5085
    DOI 10.1053/j.gastro.2023.01.031
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  4. Article ; Online: Thoughts on an academic endoscopy career.

    Chak, Amitabh

    VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy

    2019  Volume 5, Issue 1, Page(s) 7

    Language English
    Publishing date 2019-12-12
    Publishing country United States
    Document type Journal Article
    ISSN 2468-4481
    ISSN (online) 2468-4481
    DOI 10.1016/j.vgie.2019.10.011
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  5. Article ; Online: Bowel Wall Layer Thickness in Ulcerative Colitis on Endoscopic Ultrasound.

    Nguyen, Vu / Cominelli, Fabio / Chak, Amitabh

    Gastroenterology

    2023  Volume 164, Issue 7, Page(s) 1346–1347

    MeSH term(s) Humans ; Colitis, Ulcerative/diagnostic imaging ; Intestines ; Endosonography
    Language English
    Publishing date 2023-01-16
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 80112-4
    ISSN 1528-0012 ; 0016-5085
    ISSN (online) 1528-0012
    ISSN 0016-5085
    DOI 10.1053/j.gastro.2023.01.010
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  6. Article: Novel Screening Alternatives for Barrett Esophagus.

    Krishna Chandar, Apoorva / Sharma, Anamay / Chak, Amitabh

    Gastroenterology & hepatology

    2021  Volume 16, Issue 5, Page(s) 238–245

    Abstract: Barrett esophagus (BE) is the only known premalignant precursor to esophageal adenocarcinoma (EAC), a deadly malignancy that carries a dismal prognosis. Guidelines currently recommend screening for BE only in high-risk populations, such as patients with ... ...

    Abstract Barrett esophagus (BE) is the only known premalignant precursor to esophageal adenocarcinoma (EAC), a deadly malignancy that carries a dismal prognosis. Guidelines currently recommend screening for BE only in high-risk populations, such as patients with chronic gastroesophageal reflux disease (GERD) and 1 or more additional risk factors. A GERD-centered approach to BE screening likely leads to a large number of missed EAC cases, as the true population prevalence of BE is thought to be much higher than current estimates. Mass screening for BE has been proposed but is fraught with challenges. Esophagogastroduodenoscopy screening is the current gold standard for BE detection, but it is expensive and cumbersome and carries a small potential for unwanted harms. Transnasal endoscopy is simple, cost-effective, and well tolerated, but it has not found widespread acceptance among physicians and patients. Esophageal capsule endoscopy, despite being well tolerated and accepted, has not been shown to be cost-effective. Newer minimally invasive, nonendoscopic techniques for BE screening have shown promise in prospective clinical trials. Pragmatic head-to-head trials comparing these techniques will help determine the path forward and could herald a new future for population-based BE screening.
    Language English
    Publishing date 2021-05-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2386402-3
    ISSN 1554-7914
    ISSN 1554-7914
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  7. Article ; Online: Genetic Defect in Submucosal Gland-Associated Caveolin-3: A New Paradigm in Esophageal Adenocarcinoma Risk.

    Garman, Katherine S / Purkayastha, Biswa P D / Hogue, Joyce A / Fecteau, Ryan / Guda, Kishore / Chak, Amitabh

    Gastroenterology

    2023  Volume 165, Issue 6, Page(s) 1561–1564.e3

    MeSH term(s) Humans ; Adenocarcinoma/genetics ; Adenocarcinoma/pathology ; Caveolin 3 ; Esophageal Neoplasms/genetics ; Esophageal Neoplasms/pathology
    Chemical Substances Caveolin 3
    Language English
    Publishing date 2023-09-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80112-4
    ISSN 1528-0012 ; 0016-5085
    ISSN (online) 1528-0012
    ISSN 0016-5085
    DOI 10.1053/j.gastro.2023.08.039
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  8. Article ; Online: Is Mass Screening for Barrett's Esophagus a Myth or Reality?

    Thota, Prashanthi N / Chak, Amitabh

    Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association

    2018  Volume 17, Issue 4, Page(s) 610–612

    MeSH term(s) Barrett Esophagus ; Capsule Endoscopy ; Esophageal Neoplasms ; Humans ; Mass Screening
    Language English
    Publishing date 2018-09-26
    Publishing country United States
    Document type Editorial ; Research Support, N.I.H., Extramural ; Comment
    ZDB-ID 2119789-1
    ISSN 1542-7714 ; 1542-3565
    ISSN (online) 1542-7714
    ISSN 1542-3565
    DOI 10.1016/j.cgh.2018.09.026
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  9. Article ; Online: Sham or no sham: the debate continues.

    Lee, Peter J / Chak, Amitabh

    Gastrointestinal endoscopy

    2018  Volume 88, Issue 1, Page(s) 203–204

    Language English
    Publishing date 2018
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 391583-9
    ISSN 1097-6779 ; 0016-5107
    ISSN (online) 1097-6779
    ISSN 0016-5107
    DOI 10.1016/j.gie.2018.02.002
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  10. Article ; Online: Reduced risk of de novo Barrett esophagus after bariatric surgery: a national database study.

    Hurtado, Alexander / Chandar, Apoorva K / Perez, Jaime Abraham / Casselberry, Regina / Martin, Scott A / DeLano, Kayla / Abbas, Mujjahid / Chak, Amitabh

    Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery

    2023  Volume 20, Issue 1, Page(s) 40–45

    Abstract: Background: Bariatric surgery is an effective treatment for obesity and may decrease the morbidity and mortality of obesity-associated cancers.: Objective: We investigated the risk of a new diagnosis of Barrett esophagus (BE) following bariatric ... ...

    Abstract Background: Bariatric surgery is an effective treatment for obesity and may decrease the morbidity and mortality of obesity-associated cancers.
    Objective: We investigated the risk of a new diagnosis of Barrett esophagus (BE) following bariatric surgery compared to screening colonoscopy controls.
    Setting: Large national database including patients who received care in inpatient, outpatient, and specialty care services.
    Methods: A national healthcare database (TriNetX, LLC) was used for this analysis. Cases included adults (aged ≥18 yr) who had undergone either sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB). Controls included adults undergoing screening colonoscopy and an esophagoduodenoscopy on the same day and had never undergone bariatric surgery. Cases and controls were propensity-matched for confounders. The risk of de novo diagnosis of BE at least 1 year after bariatric surgery was compared between cases and controls. Secondary analyses examined the effect of bariatric surgery on metabolic outcomes such as weight loss and body mass index (BMI). The risk of de novo diagnosis of BE in SG was compared with RYGB. Odds ratios (OR) and 95% CI were used to report on these associations.
    Results: In the propensity-matched analysis, patients who had undergone a bariatric surgical procedure showed a significantly reduced risk of de novo BE when compared with screening colonoscopy controls (.67 [.48, .94]). There was substantial reduction in weight and BMI in the bariatric surgery group when compared with baseline. There was no significant difference in de novo BE diagnosis between the propensity-matched SG and RYGB groups (.77 [.5, 1.2]).
    Conclusion: Patients who underwent bariatric surgery (RYGB or SG) had a lower risk of being diagnosed with BE compared with screening colonoscopy controls who did not receive bariatric surgery. This effect appears to be largely mediated by reduction in weight and BMI.
    MeSH term(s) Adult ; Humans ; Obesity, Morbid/complications ; Obesity, Morbid/surgery ; Barrett Esophagus/diagnosis ; Barrett Esophagus/epidemiology ; Barrett Esophagus/etiology ; Bariatric Surgery/adverse effects ; Bariatric Surgery/methods ; Gastric Bypass/methods ; Treatment Outcome ; Obesity/surgery ; Gastrectomy/adverse effects ; Gastrectomy/methods ; Retrospective Studies
    Language English
    Publishing date 2023-08-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2274243-8
    ISSN 1878-7533 ; 1550-7289
    ISSN (online) 1878-7533
    ISSN 1550-7289
    DOI 10.1016/j.soard.2023.08.009
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