순천향대학교 의과대학 졸업
순천향대학교 의과대학 박사

소화기내과 전문의
순천향대학교 서울병원 소화기병센터 소장
내과학교실 교수
현재 차의과학대학교 분당차병원 내시경센터장, 소화기내과 교수

대한내과학회 정회원
대한소화기내시경학회 정회원
대한소화기학회 정회원
대한암학회 정회원
대한위암학회 정회원
대한 H. pyiori 연구학회 정회원, 평의원
미국소화기내시경학회 국제위원
대한소화기내시경학회 NOTES 연구회 위원장 역임
대한소화기암학회 자문이사
내시경 신기술 기기위원 역임
대한위암학회 상임이사 역임
대한소화기항암학회 정책보험이사
일본위암학회 2006-2015 International session 10년 연속 주관, 좌장역임
현 대한소화기내시경학회 이사장

Therapeutic outcomes in 1000 cases of endoscopic submucosal dissection for early gastric neoplasms: Korean ESD Study Group multicenter study. Gastrointest Endosc. 2009;69:1228-35
Usefulness of magnifying endoscopy for iodine-unstained lesions in a high-risk esophageal cancer population. World J Gastroenterol. 2010;16:4709-15..
Frozen section biopsy to evaluation of obscure lateral resection margins during gastric endoscopic submucosal dissection for early gastric cancer. J Gastric Cancer. 2011;11:155-61
Plasma levels of acylated ghrelin in patients with functional dyspepsia. World J Gastroenterol. 2012 ;18:2231-7
Impact of patient education with cartoon visual aids on the quality of bowel preparation for colonoscopy. Gastrointest Endosc. 2012;76:804-11
Successful treatment of early gastric cancer adjacent to a fundal varix by endoscopic submucosal dissection and endoscopic cyanoacrylate therapy. Clin Endosc. 2012;45:169-73
Early-stage gastric cancers represented as dysplasia in a previous forceps biopsy: the importance of clinical management. Dig Liver Dis. 2013 ;45:170-5
Examination of the effects of vardenafil on esophageal function using multichannel intraluminal impedance and manometry. J Neurogastroenterol Motil. 2012;18:399-405
Uncovered self-expandable metallic stent placement as a first-line palliative therapy in unresectable malignant duodenal obstruction. J Dig Dis. 2012 ;13:628-33
Intra-abdominal tuberculosis lymphadenitis diagnosed using an endoscopic ultrasonography-guided ProCore needle biopsy. Clin Endosc. 2013;46:77-80
Significance of microsatellite instability in early gastric cancer treated by endoscopic submucosal dissection. Korean J Gastroenterol. 2008;51:167-173.
Comparison of autofluorescence imaging endoscopic findings with pathologic findings after endoscopic submucosal dissection of gastric neoplasms. Gut Liver. 2008;2:186-92
A novel device for endoscopic submucosal dissection, the Fork knife. World J Gastroenterol. 2008 ;14:6726-32
Toward the global standardization of endoscopic submucosal dissection proposal for 10 years from now - present and future view of Korea. Dig Endosc. 2009;21 Suppl 1:S2-3
he efficacy of diagnostic and therapeutic laparoscopic lymph node dissection after endoscopic submucosal dissection in early gastric cancer. Korean J Gastrointest Endosc. 2010;40:90-6
Comparison of the cut direction between gross finding, streoscopic finding, and pathologic mapping of endoscopic submucosal dissection specimen Korean J Gastroenterol. 2010;56:293-8
Appropriate indications for endoscopic submucosal dissection of early gastric cancer according to tumor size and histologic type. Gastrointest Endosc. 2010;71:920-6
Endoscopic submucosal dissection for early cancer: Quo vadis? World J Gastroenterol. 2011;17:2623-5
Optical biopsies by confocal endomicroscopy prevent additive endoscopic biopsies before endoscopic submucosal dissection in gastric epithelial neoplasias: a prospective, comparative study. Gastrointest Endoscopy. 2011;74:772-8
Hybrid natural orifice transluminal endoscopic surgery: endoscopic full thickness resection of early gastric cancer and laparoscopic regional lymph node dissection- 14 human cases. Endoscopy. 2011;43:134-9
Does immunohistochemical staining have a clinical impact in early gastric cancer conducted endoscopic submucosal dissection? World J Gastroenterol. 2012;18:4578-84
Submucosal endoscopy, a new era of pure natural orifice translumenal endoscopic surgery (NOTES).Clin Endosc. 2012;45:4-10
ESD hands-on course using ex vivo and in vivo models in South Korea. Clin Endosc. 2012;45:358-61
Endoscopic submucosal dissection with sentinel node navigation surgery for early gastric cancer. Endoscopy. 2012;44:953-6
Endoscopic resection of hypopharyngeal squamous cell carcinoma. Clin Endosc. 2013;46;189-192
Evidence-based recommendations on upper gastrointestinal tract stenting: A report from the Stent Study Group of the Korean ociety of Gastrointestinal Endoscopy. Clin Endosc. 2013;46;342-354
Peroral endoscopic myotomy (POEM) for treatment of achalasia; initial results of a Korean study. Clin Endosc. 2013;46;161-167
The accuracy of probe-based confocal endomicroscopy versus conventional endoscopic biopsies for the diagnosis of superficial gastric neoplasia. Gastrointestinal Endoscopy 2013;77;899-908

2016 - 2016 미국 소화기내시경 연관학회, 세계 최초 10년 ‘시청각 교육비디오 상’ 수상
2009, 2012, 2013, 2015 EBS 명의’4회 출연
2013 네이버 10대암 명의 프로젝트 위암특집 출연
2014 전국 의대교수들이 뽑은 대한민국 최고의사 선정