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Reasons for Diagnostic Failure in Forty-Five Consecutive Mucosal Cutting Biopsy Examinations of Gastric Subepithelial Tumors

Clinical Endoscopy 2020년 53권 5호 p.575 ~ 582
Nakano Yoshiko, Takao Toshitatsu, Morita Yoshinori, Tanaka Shinwa, Toyonaga Takashi, Umegaki Eiji, Kodama Yuzo,
소속 상세정보
 ( Nakano Yoshiko ) - Kobe University Graduate School of Medicine Department of Internal Medicine
 ( Takao Toshitatsu ) - Kobe University Graduate School of Medicine Department of Internal Medicine
 ( Morita Yoshinori ) - Kobe University Graduate School of Medicine Department of Internal Medicine
 ( Tanaka Shinwa ) - Kobe University Graduate School of Medicine Department of Internal Medicine
 ( Toyonaga Takashi ) - Kobe University Hospital Department of Endoscopy
 ( Umegaki Eiji ) - Kobe University Graduate School of Medicine Department of Internal Medicine
 ( Kodama Yuzo ) - Kobe University Graduate School of Medicine Department of Internal Medicine

Abstract


Background/Aims: Mucosal cutting biopsy (MCB) is useful for the histopathological diagnosis of gastric subepithelial tumors (SETs). However, there is little information on cases in which MCB did not establish a diagnosis. In the current study, we aimed to investigate the characteristics of cases in which MCB was unsuccessful.

Methods: Cases in which MCB was used to histopathologically diagnose gastric SETs at Kobe University Hospital between August 2012 and October 2018 were retrospectively reviewed.

Results: Forty-five cases in which MCB was used to diagnose 43 gastric SETs in 43 patients were analyzed. The median tumor size was 20 mm (range, 8?50 mm). Pathological examinations resulted in definitive and suspected diagnoses and no diagnosis in 29 (gastrointestinal stromal tumor: n=17, leiomyoma: n=7, aberrant pancreas: n=3, others: n=2), 6, and 10 cases, respectively. Failure to expose the tumor according to retrospective examinations of endoscopic images was significantly associated with no diagnosis. Other possible explanations included a less elevated tumor, biopsy of the surrounding field instead of the tumor due to the mobility, and poor endoscope maneuverability due to the tumor being close to the cardia.

Conclusions: Clear exposure of gastric SETs during MCB may improve the diagnostic rate of such examinations.

키워드

Gastric subepithelial tumor; Gastrointestinal stromal tumors; Mucosal cutting biopsy

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