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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article numbere0224614
JournalPLoS ONE
Volume14
Issue number10
DOIs
StatePublished - Oct 2019

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stomach neoplasms
resection
Surgery
Stomach Neoplasms
Tumors
surgery
Observation
neoplasms
metastasis
Dissection
lymph nodes
Neoplasm Metastasis
risk factors
Survival
Neoplasms
Lymph Nodes
Endoscopy
endoscopy
computed tomography
disease course

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Kim, Hyun Ju ; Kim, Sang Gyun ; Kim, Jung ; Hong, Hyoungju ; Lee, Hee Jong ; Kim, Min Seong ; Chung, Hyunsoo ; Jung, Hyun Chae. / Clinical outcomes of early gastric cancer with non-curative resection after pathological evaluation based on the expanded criteria. In: PLoS ONE. 2019 ; Vol. 14, No. 10.
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title = "Clinical outcomes of early gastric cancer with non-curative resection after pathological evaluation based on the expanded criteria",
abstract = "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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Clinical outcomes of early gastric cancer with non-curative resection after pathological evaluation based on the expanded criteria. / Kim, Hyun Ju; Kim, Sang Gyun; Kim, Jung; Hong, Hyoungju; Lee, Hee Jong; Kim, Min Seong; Chung, Hyunsoo; Jung, Hyun Chae.

In: PLoS ONE, Vol. 14, No. 10, e0224614, 10.2019.

Research output: Contribution to journalArticle

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AU - Kim, Jung

AU - Hong, Hyoungju

AU - Lee, Hee Jong

AU - Kim, Min Seong

AU - Chung, Hyunsoo

AU - Jung, Hyun Chae

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