1. Yasuda K, Mizuma Y, Nakajima M, Kawai K. Endoscopic laser treatment for early gastric cancer. Endoscopy. 1993; 25:451–454.
Article
2. Tada M, Murakami A, Karita M, Yanai H, Okita K. Endoscopic resection of early gastric cancer. Endoscopy. 1993; 25:445–450.
Article
3. Inoue H, Takeshita M, Hori H, Muraoka Y, Yoneshima H, Endo M. Endoscopic mucosal resection with cap-fitted panendoscope for esophagus, stomach, and colon mucosal lesions. Gastrointest Endosc. 1993; 39:58–62.
4. Kim JJ, Lee JH, Jung HY, et al. EMR for early gastric cancer in Korea: a multicenter retrospective study. Gastrointest Endosc. 2007; 66:693–700.
5. Gotoda T, Kondo H, Ono H, et al. A new endoscopic mucosal resection procedure using an insulation-tipped electrosurgical knife for rectal flat lesions: report of two cases. Gastrointest Endosc. 1999; 50:560–563.
Article
6. Ohkuwa M, Hosokawa K, Boku N, Ohtu A, Tajiri H, Yoshida S. New endoscopic treatment for intramucosal gastric tumors using an insulated-tip diathermic knife. Endoscopy. 2001; 33:221–226.
Article
7. Chung IK, Lee JH, Lee SH, et al. Therapeutic outcomes in 1000 cases of endoscopic submucosal dissection for early gastric neoplasms: Korean ESD Study Group multicenter study. Gastrointest Endosc. 2009; 69:1228–1235.
Article
8. Park YS, Kim SH, Ryu HY, et al. Hybrid natural orifice transluminal endoscopic surgery with sentinel lymph node navigation for deep early gastric cancer in the fundic region. Clin Endosc. 2016; 49:298–302.
Article
9. Gotoda T, Yanagisawa A, Sasako M, et al. Incidence of lymph node metastasis from early gastric cancer: estimation with a large number of cases at two large centers. Gastric Cancer. 2000; 3:219–225.
Article
10. Fukase K, Matsuda T, Suzuki M, et al. Evaluation of the efficacy of endoscopic treatment for gastric cacner considered in terms of long-term prognosis. Dig Endosc. 1994; 6:241–247.
11. Uedo N, Iishi H, Tatsuta M, et al. Longterm outcomes after endoscopic mucosal resection for early gastric cancer. Gastric Cancer. 2006; 9:88–92.
Article
12. Japanese Gastric Cancer Association. Japanese gastric cancer treatment guideline 2014 (ver. 4). Gastric Cancer. 2017; 20:1–19.
13. Lee JH, Kim JG, Jung HK, et al. Synopsis on clinical practice guideline of gastric cancer in Korea: an evidencebased approach. Korean J Gastroenterol. 2014; 63:66–81.
Article
14. Joo M, Kim KM. Histologic discrepancy between gastric biopsy and resection specimen in the era of endoscopic treatment for early gastric cancer. Korean J Gastroenterol. 2014; 64:256–259.
Article
15. Lim H, Jung HY, Park YS, et al. Discrepancy between endoscopic forceps biopsy and endoscopic resection in gastric epithelial neoplasia. Surg Endosc. 2014; 28:1256–1262.
Article
16. Ryu DG, Choi CW, Kang DH, et al. Clinical outcomes of endoscopic submucosa dissection for high-grade dysplasia from endoscopic forceps biopsy. Gastric Cancer. 2017; 20:671–678.
Article
17. Lee JH, Min YW, Lee JH, et al. Diagnostic group classifications of gastric neoplasms by endoscopic resection criteria before and after treatment: real-world experience. Surg Endosc. 2016; 30:3987–3993.
Article
18. Kim YI, Kim HS, Kook MC, et al. Discrepancy between clinical and final pathological evaluation findings in early gastric cancer patients treated with endoscopic submucosal dissection. J Gastric Cancer. 2016; 16:34–42.
Article
19. Chung JW, Jung HY, Choi KD, et al. Extended indication of endoscopic resection for mucosal early gastric cancer: analysis of a single center experience. J Gastroenterol Hepatol. 2011; 26:884–887.
Article
20. Hirasawa T, Gotoda T, Miyata S, et al. Incidence of lymph node metastasis and the feasibility of endoscopic resection for undifferentiated-type early gastric cancer. Gastric Cancer. 2009; 12:148–152.
Article
21. Gotoda T, Iwasaki M, Kusano C, Seewald S, Oda I. Endoscopic resection of early gastric cancer treated by guideline and expanded National Cancer Centre criteria. Br J Surg. 2010; 97:868–871.
Article
22. Ahn JY, Choi KD, Choi JY, et al. Procedure time of endoscopic submucosal dissection according to the size and location of early gastric cancers: analysis of 916 dissections performed by 4 experts. Gastrointest Endosc. 2011; 73:911–916.
Article
23. Choi JY, Park YS, Jung HY, et al. Identifying predictors of lymph node metastasis after endoscopic resection in patients with minute submucosal cancer of the stomach. Surg Endosc. 2015; 29:1476–1483.
Article
24. Kim JH, Nam HS, Choi CW, et al. Risk factors associated with difficult gastric endoscopic submucosal dissection: predicting difficult ESD. Surg Endosc. 2017; 31:1617–1626.
Article
25. Wang H, Zhang H, Wang C, et al. Expanded endoscopic therapy criteria should be cautiously used in intramucosal gastric cancer. Chin J Cancer Res. 2016; 28:348–354.
Article
26. Pyo JH, Lee H, Min BH, et al. A risk prediction model based on lymph-node metastasis in poorly differentiated-type intramucosal gastric cancer. PLoS One. 2016; 11:e0156207.
Article
27. Kwon YH, Jeon SW, Nam SY, Lee HS, Kim JS, Park JY. Longterm outcome after endoscopic submucosal dissection for early gastric cancer in non-neoplastic pathology results. Dig Dis Sci. 2017; 62:1313–1320.
Article
28. Lee IS, Lee S, Park YS, Gong CS, Yook JH, Kim BS. Applicability of endoscopic submucosal dissection for undifferentiated early gastric cancer: mixed histology of poorly differentiated adenocarcinoma and signet ring cell carcinoma is a worse predictive factor of nodal metastasis. Surg Oncol. 2017; 26:8–12.
Article
29. Pyo JH, Lee H, Min BH, et al. Early gastric cancer with a mixed-type lauren classification is more aggressive and exhibits greater lymph node metastasis. J Gastroenterol. 2017; 52:594–601.
Article
30. Park HK, Lee KY, Yoo MW, Hwang TS, Han HS. Mixed carcinoma as an independent prognostic factor in submucosal invasive gastric carcinoma. J Korean Med Sci. 2016; 31:866–872.
Article
31. Hwang CS, Ahn S, Lee BE, et al. Risk of lymph node metastasis in mixed-type early gastric cancer determined by the extent of the poorly differentiated component. World J Gastroenterol. 2016; 22:4020–4026.
Article
32. Han JP, Hong SJ, Kim HK, et al. Risk stratification and management of noncurative resection after endoscopic submucosal dissection for early gastric cancer. Surg Endosc. 2016; 30:184–189.
Article
33. Pyo JH, Shin CM, Lee H, et al. A risk-prediction model based on lymph-node metastasis for incorporation into a treatment algorithm for signet ring cell-type intramucosal gastric cancer. Ann Surg. 2016; 264:1038–1043.
Article
34. Kim JS, Kang SH, Moon HS, et al. Clinical outcome after endoscopic submucosal dissection for early gastric cancer of absolute and expanded indication. Medicine (Baltimore). 2017; 96:e6710.
Article
35. Lee EG, Ryu KW, Eom BW, et al. The effect of endoscopic resection on short-term surgical outcomes in patients with additional laparoscopic gastrectomy after noncurative resection for gastric cancer. J Gastric Cancer. 2017; 17:33–42.
Article
36. Eom BW, Kim YI, Kim KH, et al. Survival benefit of additional surgery after noncurative endoscopic resection in patients with early gastric cancer. Gastrointest Endosc. 2017; 85:155–163.e3.
Article
37. Kim EH, Park JC, Song IJ, et al. Prediction model for noncurative resection of endoscopic submucosal dissection in patients with early gastric cancer. Gastrointest Endosc. 2017; 85:976–983.
Article
38. Min BH, Kim ER, Kim KM, et al. Surveillance strategy based on the incidence and patterns of recurrence after curative endoscopic submucosal dissection for early gastric cancer. Endoscopy. 2015; 47:784–793.
Article
39. Choi KS, Jung HY, Choi KD, et al. EMR versus gastrectomy for intramucosal gastric cancer: comparison of long-term outcomes. Gastrointest Endosc. 2011; 73:942–948.
Article
40. Lee JY, Cho KB, Kim ES, et al. Risk factors for local recurrence after en bloc endoscopic submucosal dissection for early gastric cancer. World J Gastrointest Endosc. 2016; 8:330–337.
Article
41. Jung SJ, Kim BS, Oh ST, Yook JH, Choi WY, Lee CH. Characteristics of recurred early gastric cancer after gastric resection. J Korean Surg Soc. 2003; 65:13–17.
42. Ahn JY, Jung HY, Choi KD, et al. Endoscopic and oncologic outcomes after endoscopic resection for early gastric cancer:1370 cases of absolute and extended indications. Gastrointest Endosc. 2011; 74:485–493.
43. Ahn JY, Park HJ, Park YS, et al. Endoscopic resection for undifferentiated-type early gastric cancer: immediate endoscopic outcome and long-term survivals. Dig Dis Sci. 2016; 61:1158–1164.
44. Okada K, Fujisaki J, Yoshida T, et al. Longterm outcomes of endoscopic submucosal dissection for undifferentiated-type early gastric cancer. Endoscopy. 2012; 44:122–127.
Article
45. Kang HY, Kim SG, Kim JS, Jung HC, Song IS. Clinical outcomes of endoscopic submucosal dissection for undifferentiated early gastric cancer. Surg Endosc. 2010; 24:509–516.
Article
46. Kim JH, Kim YH, Jung DH, et al. Follow-up outcomes of endoscopic resection for early gastric cancer with undifferentiated histology. Surg Endosc. 2014; 28:2627–2633.
Article
47. Sohn SH, Lee SH, Kim KO, Jang BI, Kim TN. Therapeutic outcomes of endoscopic submucosal dissection for early gastric cancer: single-center study. Eur J Gastroenterol Hepatol. 2017; 29:61–67.
48. Choi IJ, Lee JH, Kim YI, et al. Longterm outcome comparison of endoscopic resection and surgery in early gastric cancer meeting the absolute indication for endoscopic resection. Gastrointest Endosc. 2015; 81:333–341.e1.
Article
49. Kim YI, Kim YW, Choi IJ, et al. Longterm survival after endoscopic resection versus surgery in early gastric cancers. Endoscopy. 2015; 47:293–301.
Article
50. Ryu SJ, Kim BW, Kim BG, et al. Endoscopic submucosal dissection versus surgical resection for early gastric cancer: a retro spective multicenter study on immediate and long-term outcome over 5 years. Surg Endosc. 2016; 30:5283–5289.
51. Pyo JH, Lee H, Min BH, et al. Longterm outcome of endoscopic resection vs. surgery for early gastric cancer: a non-inferiority- matched cohort study. Am J Gastroenterol. 2016; 111:240–249.
52. Cho JH, Cha SW, Kim HG, et al. Longterm outcomes of endoscopic submucosal dissection for early gastric cancer: a comparison study to surgery using propensity score-matched analysis. Surg Endosc. 2016; 30:3762–3773.
Article
53. Chang JY, Shim KN, Tae CH, et al. Comparison of clinical outcomes after endoscopic submucosal dissection and surgery in the treatment of early gastric cancer: a single-institute study. Medicine (Baltimore). 2017; 96:e7210.
54. Gong EJ, Kim DH, Ahn JY, et al. Comparison of long-term outcomes of endoscopic submucosal dissection and surgery for esophagogastric junction adenocarcinoma. Gastric Cancer. 2017; 20(Suppl 1):84–91.
Article
55. Sun K, Chen S, Ye J, et al. Endoscopic resection versus surgery for early gastric cancer: a systematic review and metaanalysis. Dig Endosc. 2016; 28(5):513–25.
Article
56. Bang CS, Baik GH, Shin IS, et al. Endoscopic submucosal dissection for early gastric cancer with undifferentiated-type histology: a metaanalysis. World J Gastroenterol. 2015; 21:6032–6043.
Article