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Clinical outcomes of early gastric cancer with non-curative resection after pathological evaluation based on the expanded criteria

 Hyun Ju Kim  ;  Sang Gyun Kim  ;  Jung Kim  ;  Hyoungju Hong  ;  Hee Jong Lee  ;  Min Seong Kim  ;  Hyunsoo Chung  ;  Hyun Chae Jung 
 PLOS ONE, Vol.14(10) : e0224614, 2019-10 
Journal Title
Issue Date
Aged ; Disease-Free Survival ; Early Detection of Cancer / methods ; Endoscopic Mucosal Resection / methods* ; Endoscopy ; Female ; Gastrectomy / methods ; Gastric Mucosa / pathology ; Humans ; Kaplan-Meier Estimate ; Lymph Node Excision / methods ; Lymph Nodes / pathology ; Lymphatic Metastasis / pathology ; Lymphatic Vessels / pathology ; Male ; Middle Aged ; Republic of Korea ; Retrospective Studies ; Risk Factors ; Stomach Neoplasms / mortality* ; Stomach Neoplasms / pathology* ; Stomach Neoplasms / surgery
Additional surgical resection should be considered for the patients with pathological findings beyond the expanded criteria with the risk for LN metastasis. However, close observation without additional surgery may be applied because of various reasons. We aimed to determine the clinical outcomes of early gastric cancer beyond the expanded criteria after endoscopic resection according to the pathological extent. A total of 288 patients with 289 lesions beyond the expanded criteria of endoscopic submucosal dissection for early gastric cancer were analyzed between 2005 and 2016, and classified into two groups according to additional treatment: observation (n = 175 patients, 175 lesions) and surgery (n = 113 patients, 114 lesions). The depth of tumor invasion was greater and the tumor-positive vertical margin and lymphatic and venous invasion were more common in the surgery group than in the observation group (P<0.001). Residual, synchronous, and metachronous tumors were more common in the observation group; however, the occurrence of regional lymph node and distant metastasis did not differ between the groups. Overall survival and 5-year disease-specific survival did not differ between the groups (observation vs surgery, 88.6 vs 93.8%; P = 0.259, 98.2 vs 100%; P = 0.484, respectively), but the 5-year disease-free survival was lower in the observation group (73.5 vs 97.9%; P<0.001). On multivariate analysis, tumor-positive lateral margin was a risk factor for residual tumor and lymphatic and venous invasion were risk factors for regional lymph node metastasis. In conclusion, the clinical course of beyond the expanded criteria of endoscopic submucosal dissection for early gastric cancer showed good prognosis over 98% in 5-year disease specific survival. If additional surgery cannot be performed, a close follow-up with endoscopy and abdominal computed tomography can be considered as an alternative for carefully selected patients without lymphatic and vascular invasion.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Hyun Ju(김현주)
Chung, Hyun Soo(정현수)
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