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논문 기본 정보

자료유형
학술저널
저자정보
Richard Hall (Department of Emergency Medicine, Wexford General Hospital, Wexford, Republic of Ireland) Cassandra Bruce-Brand (Division of Anatomical Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa) Washington Mudini (National Health Laboratory Service, Cape Town, South Africa) Alessandro Pietro Aldera (Division of Anatomical Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa)
저널정보
대한상부위장관 헬리코박터학회 Korean Journal of Helicobacter Upper Gastrointestinal Research Korean Journal of Helicobacter Upper Gastrointestinal Research 제24권 제1호
발행연도
2024.3
수록면
45 - 51 (7page)
DOI
10.7704/kjhugr.2023.0048

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Objectives: The identification of Helicobacter pylori is one of the main tasks of diagnostic histopathologists when evaluating endoscopic gastric biopsies. The sensitivity and specificity of different stains that facilitate this identification vary. Despite the existing guidelines, many histopathology laboratories perform routine histochemical staining of all gastric biopsies to improve turnaround times. This study assessed the utility of an H. pylori immunohistochemical (IHC) stain compared with a routinely used histochemical stain, cresyl violet (CV), in the South African setting. Methods: Cases were identified retrospectively, and original histopathology reports were used to establish the “ground truth” diagnoses. Three pathologists independently evaluated the CV and IHC stains; each pathologist was timed in a standardized manner. The sensitivity, specificity, interobserver variability, and time taken to identify H. pylori with each stain were compared. Results: The overall sensitivity and specificity for IHC staining (85.2% and 97.7%, respectively) were higher than those for CV staining (64.5% and 90.6%, respectively). Detection of H. pylori took an average of 16 and 49 seconds using the IHC and CV stains, respectively. The prevalence of H. pylori in our laboratory was 23.7%, which is lower than the reported national prevalence in South Africa. Conclusions: IHC stain-based detection of H. pylori in inflamed gastric biopsies demonstrated superior sensitivity and specificity than CV staining. This was particularly true for cases involving patients with low bacterial loads. The interpretation of H. pylori IHC staining is much faster than that associated with CV staining, which is important in centers with high caseloads and shortages of pathologists.

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