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논문 기본 정보

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저자정보
Kim Tae-Se (Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) An Ji Yeong (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Choi Min Gew (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Lee Jun Ho (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Sohn Tae Sung (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Bae Jae Moon (Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Min Yang Won (Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Lee Hyuk (Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Lee Jun Haeng (Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Rhee Poong-Lyul (Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Kim Jae J. (Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea) Kim Kyoung-Mee (Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.) Min Byung-Hoon (Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea)
저널정보
거트앤리버 발행위원회 Gut and Liver Gut and Liver Vol.18 No.5
발행연도
2024.9
수록면
807 - 813 (7page)
DOI
10.5009/gnl240006

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초록· 키워드

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Background/Aims: Lymphoepithelioma-like carcinoma (LELC) is a rare subtype of gastric cancer. We aimed to identify the clinicopathological features and rate of lymph node metastasis (LNM) to investigate the feasibility of endoscopic submucosal dissection for early gastric LELC confined to the mucosa or submucosa. Methods: We compared the clinicopathological characteristics of 116 early gastric LELC patients and 5,753 early gastric well- or moderately differentiated (WD or MD) tubular adenocarcinoma patients treated by gastrectomy. Results: Compared to WD or MD early gastric cancer (EGC) patients, early LELC patients were younger and had a higher prevalence of proximally located tumors. Despite more frequent deep submucosal invasion (86.2% vs 29.8%), lymphatic invasion was less frequent (6.0% vs 16.2%) in early LELC patients than in WD or MD EGC patients. Among tumors with deep submucosal invasion, the tumor size was smaller, lymphatic invasion was less frequent (6.0% vs 40.2%) and the rate of LNM was lower (10.0% vs 19.4%) in patients with LELC than in those with WD or MD EGC. The overall rate of LNM in early LELC patients was 8.6% (10/116). The risk of LNM in patients with mucosal, shallow submucosal invasive, or deep submucosal invasive LELC was 0% (0/6), 0% (0/10), and 10% (10/100), respectively. Conclusions: Early LELC is a distinct subtype of EGC with more frequent deep submucosal invasion but less lymphatic invasion and LNM than WD or MD EGCs. Endoscopic submucosal dissection may be considered curative for patients with early LELC confined to the mucosa or shallow submucosa, given its negligible rate of LNM.
#Early gastric cancer #Endoscopic resection #Lymphoepithelioma-like carcinoma #Lymph node metastasis

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