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논문 기본 정보

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학술저널
저자정보
Ahn Soomin (Department of Pathology Seoul National University Bundang Hospital Seoul National University Colleg) Lee Jong-chan (Department of Internal Medicine Seoul National University Bundang Hospital Seoul National Universit) Kim Jaihwan (Department of Internal Medicine Seoul National University Bundang Hospital Seoul National Universit) Kim Young Hoon (Department of Radiology Seoul National University Bundang Hospital Seoul National University Colleg) Yoon Yoo-Seok (Department of Surgery Seoul National University Bundang Hospital Seoul National University College) Han Ho-Seong (Department of Surgery Seoul National University Bundang Hospital Seoul National University College) Kim Haeryoung (Department of Pathology Seoul National University Hospital Seoul National University College of Med) Hwang Jin-Hyeok (Department of Internal Medicine Seoul National University Bundang Hospital Seoul National Universit)
저널정보
거트앤리버 발행위원회 Gut and Liver Gut and Liver 제16권 제1호
발행연도
2022.1
수록면
129 - 137 (9page)
DOI
10.5009/gnl20312

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Background/Aims: Neoadjuvant chemotherapy is increasingly utilized in patients with borderline or locally advanced pancreatic cancer (LAPC). However, the pathologic evaluation of tumor regression is not routinely performed or well established. We aimed to evaluate the prognostic value of three tumor regression grading systems frequently used in LAPC and to determine the correlation between pathologic and clinical response. Methods: We included a total of 38 patients with LAPC who were treated with neoadjuvant chemotherapy and subsequent resection. Pathologic tumor regression was graded based on the College of American Pathologists (CAP), Evans, and MD Anderson grading systems. Results: One out of 38 patients (2.6%) achieved a pathologic complete response. Unlike other grading systems (Evans, p=0.063; MD Anderson, p=0.110), the CAP grading system was a significant prognostic factor for overall survival (p=0.043). Pathologic N stage (p=0.023), margin status (p=0.044), and radiologic response (p=0.016) correlated with overall survival. In the multivariate analysis, CAP 3 was an independent predictor of shorter overall survival (p=0.026). The CAP grading system correlated with the radiologic response (p=0.007) but not the carbohydrate antigen 19-9 level (p=0.333). Conclusions: The four-tier CAP pathologic tumor regression grading system predicted the clinical outcome in LAPC patients who underwent resection after neoadjuvant chemotherapy. Therefore, a more comprehensive pathologic evaluation is warranted in these patients.

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