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Article: Confocal laser endomicroscopy and molecular imaging in barrett esophagus and stomach.

Choi, Kwi-Sook / Jung, Hwoon-Yong

2014 Volume 47, Issue 1, Page(s) 23–30

Abstract: Detection of premalignant lesions in the upper gastrointestinal tract may facilitate endoscopic treatment and improve survival. Despite technological advances in white light endoscopy, its ability to detect premalignant lesions remains limited. Early ... ...

Abstract	Detection of premalignant lesions in the upper gastrointestinal tract may facilitate endoscopic treatment and improve survival. Despite technological advances in white light endoscopy, its ability to detect premalignant lesions remains limited. Early detection could be improved by using advanced endoscopic imaging techniques, such as magnification endoscopy, narrow band imaging, i-scanning, flexible spectral imaging color enhancement, autofluorescence imaging, and confocal laser endomicroscopy (CLE), as these techniques may increase the rate of detection of mucosal abnormalities and allow optical diagnosis. The present review focuses on advanced endoscopic imaging techniques based on the use of CLE for diagnosing premalignant lesions in Barrett esophagus and stomach.
Language	English
Publishing date	2014-01-24
Publishing country	Korea (South)
Document type	Journal Article ; Review
ZDB-ID	2643507-X
ISSN	2234-2443 ; 2234-2400
ISSN (online)	2234-2443
ISSN	2234-2400
DOI	10.5946/ce.2014.47.1.23
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Article: [A case of rectal carcinoid with invasion to proper muscle layer].

Choi, Kwi-Sook / Byeon, Jeong-Sik

The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi

2007 Volume 50, Issue 4, Page(s) 213–215

MeSH term(s)	Carcinoid Tumor/diagnostic imaging ; Carcinoid Tumor/etiology ; Carcinoid Tumor/pathology ; Colonoscopy ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Muscles/pathology ; Neoplasm Invasiveness ; Rectal Neoplasms/diagnostic imaging ; Rectal Neoplasms/etiology ; Rectal Neoplasms/pathology ; Ultrasonography
Language	Korean
Publishing date	2007-10
Publishing country	Korea (South)
Document type	Case Reports ; Journal Article
ZDB-ID	2611091-X
ISSN	1598-9992
ISSN	1598-9992
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Article: Extracorporeal shock wave lithotripsy for the treatment of pancreatic duct stones.

Choi, Kwi-Sook / Kim, Myung-Hwan

Journal of hepato-biliary-pancreatic surgery

2006 Volume 13, Issue 2, Page(s) 86–93

Abstract: The purpose of endoscopic therapy in chronic pancreatitis is to decompress the main pancreatic duct and to remove the obstacles that impede the ductal flow of pancreatic juice. The availability of extracorporeal shock wave lithotripsy (ESWL) has improved ...

Abstract	The purpose of endoscopic therapy in chronic pancreatitis is to decompress the main pancreatic duct and to remove the obstacles that impede the ductal flow of pancreatic juice. The availability of extracorporeal shock wave lithotripsy (ESWL) has improved the results of endoscopic drainage of the main pancreatic duct and has also expanded the indications of endoscopic therapy for chronic pancreatitis. This article briefly reviews ESWL for pancreatic duct stones in patients with chronic pancreatitis, including our experience with ESWL. ESWL is an effective and safe procedure for endoscopically unremovable main pancreatic duct stones, and, in selected patients, ESWL alone may be effective.
MeSH term(s)	Calculi/complications ; Calculi/therapy ; Cholangiopancreatography, Endoscopic Retrograde ; Chronic Disease ; Humans ; Lithotripsy/methods ; Pancreatic Ducts ; Pancreatitis/etiology ; Pancreatitis/therapy ; Recurrence ; Sphincterotomy, Endoscopic ; Tomography, X-Ray Computed
Language	English
Publishing date	2006
Publishing country	Japan
Document type	Journal Article ; Review
ZDB-ID	1181222-9
ISSN	1436-0691 ; 0944-1166
ISSN (online)	1436-0691
ISSN	0944-1166
DOI	10.1007/s00534-005-1063-3
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Article ; Online: Endoscopic Resection for Undifferentiated-Type Early Gastric Cancer: Immediate Endoscopic Outcomes and Long-Term Survivals.

Ahn, Ji Yong / Park, Hee Jung / Park, Young Soo / Lee, Jeong Hoon / Choi, Kwi-Sook / Jeong, Kee Wook / Kim, Do Hoon / Choi, Kee Don / Song, Ho June / Lee, Gin Hyug / Jung, Hwoon-Yong

Digestive diseases and sciences

2016 Volume 61, Issue 4, Page(s) 1158–1164

Abstract: Background: Endoscopic resection (ER) is considered carefully as a curative treatment option for selected cases of undifferentiated-type early gastric cancer (UEGC). This study investigated immediate endoscopic and long-term survival outcomes of ... ...

Abstract	Background: Endoscopic resection (ER) is considered carefully as a curative treatment option for selected cases of undifferentiated-type early gastric cancer (UEGC). This study investigated immediate endoscopic and long-term survival outcomes of patients with UEGC treated with ER. Methods: A review of a database of 2483 EGC consecutively enrolled patients who underwent ER between January 2004 and December 2010 identified 101 patients with UEGC who met the expanded indications. Outcomes were investigated in these patients. Results: The rates of R0 en bloc and curative resection were 86 and 70 %, respectively. Of 30 tumors non-curatively resected, 17 were larger than 20 mm in diameter, 12 had positive resection margins, and 13 had submucosal or lymphovascular invasion on resection pathology. ER-related complications occurred in 12 patients (12 %), with all complications treated endoscopically without surgery. The median ER procedure time was 26 min [interquartile range (IQR) 20-39 min]. Only tumor location in the lower part of the stomach was significantly associated with curative ER (P = 0.038). Tumor recurrence was observed in seven patients at a median 17 months (IQR 12-47 months) after ER. During a median follow-up of 60 months (IQR 48-80 months), the 5-year overall mortality rates were 5 % in the curative and 4 % in the non-curative resection groups (P = 0.927). There were no gastric cancer-related deaths. Conclusions: ER shows acceptable immediate endoscopic and long-term survival outcomes in selected patients with UEGC.
MeSH term(s)	Carcinoma/mortality ; Carcinoma/pathology ; Carcinoma/surgery ; Female ; Gastroscopy/statistics & numerical data ; Humans ; Male ; Middle Aged ; Neoplasm Recurrence, Local/epidemiology ; Republic of Korea/epidemiology ; Retrospective Studies ; Stomach/pathology ; Stomach Neoplasms/mortality ; Stomach Neoplasms/pathology ; Stomach Neoplasms/surgery
Language	English
Publishing date	2016
Publishing country	United States
Document type	Journal Article
ZDB-ID	304250-9
ISSN	1573-2568 ; 0163-2116
ISSN (online)	1573-2568
ISSN	0163-2116
DOI	10.1007/s10620-015-3988-y
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Article ; Online: Clinical outcomes of endoscopic resection for gastric neoplasms in the pylorus.

Gong, Eun Jeong / Kim, Do Hoon / Jung, Hwoon-Yong / Choi, Young Kwon / Lim, Hyun / Choi, Kwi-Sook / Ahn, Ji Yong / Lee, Jeong Hoon / Choi, Kee Don / Song, Ho June / Lee, Gin Hyug / Kim, Jin-Ho

Surgical endoscopy

2015 Volume 29, Issue 12, Page(s) 3491–3498

Abstract: Background: Endoscopic resection for gastric neoplasms in the pylorus is a technically difficult procedure. We investigated clinical outcomes to determine the feasibility and effectiveness of endoscopic resection for gastric neoplasms in the pylorus.: ...

Abstract	Background: Endoscopic resection for gastric neoplasms in the pylorus is a technically difficult procedure. We investigated clinical outcomes to determine the feasibility and effectiveness of endoscopic resection for gastric neoplasms in the pylorus. Methods: Subjects who underwent endoscopic resection for gastric neoplasms in the pylorus between January 1997 and February 2012 were eligible. Results: A total of 227 subjects underwent endoscopic resection for 228 gastric adenomas and early cancers in the pylorus. En bloc resection was achieved for 193 lesions (84.6%), including complete resection of 195 lesions (85.5%), and curative resection of 167 lesions (73.2%). Complete resection and curative resection rates were significantly different according to the location (prepyloric, pyloric, and postpyloric, P = 0.002 and P = 0.006). Delayed bleeding and stricture occurred in 5.3 and 3.1%, respectively, and there was no patient with perforation. During a median follow-up period of 79.0 months, local tumor recurrence was detected in 2.6%. Conclusions: Endoscopic resection appears to be a feasible and effective method for the treatment of pyloric neoplasms, regardless of the location and distribution of tumor. Thorough evaluation of the distal margin of the tumors is necessary when tumors involve or extend beyond the pyloric ring, and the appropriate use of additional techniques may be useful.
MeSH term(s)	Adenoma/mortality ; Adenoma/surgery ; Aged ; Dissection/methods ; Endoscopy, Gastrointestinal ; Feasibility Studies ; Female ; Gastric Mucosa/surgery ; Humans ; Male ; Middle Aged ; Neoplasm Recurrence, Local/pathology ; Operative Time ; Pylorus/surgery ; Retrospective Studies ; Stomach Neoplasms/mortality ; Stomach Neoplasms/surgery ; Survival Analysis
Language	English
Publishing date	2015
Publishing country	Germany
Document type	Journal Article
ZDB-ID	639039-0
ISSN	1432-2218 ; 0930-2794
ISSN (online)	1432-2218
ISSN	0930-2794
DOI	10.1007/s00464-015-4099-8
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Article: Yields and Utility of Endoscopic Ultrasonography-Guided 19-Gauge Trucut Biopsy versus 22-Gauge Fine Needle Aspiration for Diagnosing Gastric Subepithelial Tumors.

Na, Hee Kyong / Lee, Jeong Hoon / Park, Young Soo / Ahn, Ji Yong / Choi, Kwi-Sook / Kim, Do Hoon / Choi, Kee Don / Song, Ho June / Lee, Gin Hyug / Jung, Hwoon-Yong / Kim, Jin-Ho

Clinical endoscopy

2015 Volume 48, Issue 2, Page(s) 152–157

Abstract: Background/aims: To evaluate the yields and utility of 19-gauge (G) Trucut biopsy (TCB) versus 22 G fine needle aspiration (FNA) for diagnosing gastric subepithelial tumors (SETs).: Methods: We retrieved data for 152 patients with a gastric SET ... ...

Abstract	Background/aims: To evaluate the yields and utility of 19-gauge (G) Trucut biopsy (TCB) versus 22 G fine needle aspiration (FNA) for diagnosing gastric subepithelial tumors (SETs). Methods: We retrieved data for 152 patients with a gastric SET larger than 2 cm who had undergone endoscopic ultrasonography (EUS)-guided 19 G TCB (n=90) or 22 G FNA (n=62). Relevant clinical, tumor-specific, and EUS procedural information was reviewed retrospectively. Results: A specific diagnosis was made for 76 gastrointestinal stromal tumors (GISTs) and 51 non-GIST SETs. The diagnostic yield of TCB was greater than that of FNA (77.8% vs. 38.7%, p<0.001). The percentage of non-diagnostic specimens (suspicious and insufficient) was significantly lower in the TCB group (6.7% and 15.5%, respectively) than in the FNA group (22.6% and 38.7%, respectively; both p<0.001). TCB accurately diagnosed 90.9% of GISTs and 81.1% of non-GIST SETs, whereas FNA accurately diagnosed 68.8% of GISTs and 14.3% of non-GIST SETs. There were nine technical failures with TCB, and the rate of adverse events did not differ between the groups (TCB vs. FNA, 3.3% vs. 8.1%; p=0.27). Conclusions: Nineteen-gauge TCB is safe and highly valuable for diagnosing gastric SETs larger than 2 cm if technical failure can be avoided.
Language	English
Publishing date	2015-03-27
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	2643507-X
ISSN	2234-2443 ; 2234-2400
ISSN (online)	2234-2443
ISSN	2234-2400
DOI	10.5946/ce.2015.48.2.152
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Article ; Online: Clinical and Endoscopic Features of Metastatic Tumors in the Stomach.

Kim, Ga Hee / Ahn, Ji Yong / Jung, Hwoon-Yong / Park, Young Soo / Kim, Min-Ju / Choi, Kee Don / Lee, Jeong Hoon / Choi, Kwi-Sook / Kim, Do Hoon / Lim, Hyun / Song, Ho June / Lee, Gin Hyug / Kim, Jin-Ho

Gut and liver

2015 Volume 9, Issue 5, Page(s) 615–622

Abstract: Background/aims: Metastasis to the stomach is rare. The aim of this study was to describe and analyze the clinical outcomes of cancers that metastasized to the stomach.: Methods: We reviewed the clinicopathological aspects of patients with gastric ... ...

Abstract	Background/aims: Metastasis to the stomach is rare. The aim of this study was to describe and analyze the clinical outcomes of cancers that metastasized to the stomach. Methods: We reviewed the clinicopathological aspects of patients with gastric metastases from solid organ tumors. Thirty-seven cases were identified, and we evaluated the histology, initial presentation, imaging findings, lesion locations, treatment courses, and overall patient survival. Results: Endoscopic findings indicated that solitary lesions presented more frequently than multiple lesions and submucosal tumor-like tumors were the most common appearance. Malignant melanoma was the tumor that most frequently metastasized to the stomach. Twelve patients received treatments after the diagnosis of gastric metastasis. The median survival period from the diagnosis of gastric metastasis was 3.0 months (interquartile range, 1.0 to 11.0 months). Patients with solitary lesions and patients who received any treatments survived longer after the diagnosis of metastatic cancer than patients with multiple lesions and patients who did not any receive any treatments. Conclusions: Proper treatment with careful consideration of the primary tumor characteristics can increase the survival period in patients with tumors that metastasize to the stomach, especially in cases with solitary metastatic lesions in endoscopic findings.
MeSH term(s)	Endoscopy, Gastrointestinal ; Female ; Gastric Mucosa/pathology ; Humans ; Male ; Melanoma/pathology ; Middle Aged ; Stomach Neoplasms/mortality ; Stomach Neoplasms/secondary ; Stomach Neoplasms/therapy ; Survival Analysis
Language	English
Publishing date	2015--23
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	2399010-7
ISSN	2005-1212 ; 1976-2283
ISSN (online)	2005-1212
ISSN	1976-2283
DOI	10.5009/gnl14032
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Article ; Online: Use of Endoscopic Ultrasound to Evaluate Large Gastric Folds: Features Predictive of Malignancy.

Lim, Hyun / Lee, Gin Hyug / Na, Hee Kyong / Ahn, Ji Yong / Lee, Jeong Hoon / Choi, Kwi-Sook / Kim, Do Hoon / Choi, Kee Don / Song, Ho June / Jung, Hwoon-Yong / Kim, Jin-Ho / Kim, Dowhan / Park, Young Soo

Ultrasound in medicine & biology

2015 Volume 41, Issue 10, Page(s) 2614–2620

Abstract: The aim of this study was to investigate with endoscopic ultrasound (EUS) the features of the gastric wall that can be used to predict malignant disease in patients with large gastric folds. We retrospectively reviewed the EUS findings of 65 patients (26 ...

Abstract	The aim of this study was to investigate with endoscopic ultrasound (EUS) the features of the gastric wall that can be used to predict malignant disease in patients with large gastric folds. We retrospectively reviewed the EUS findings of 65 patients (26 with benign and 39 with malignant disease) with large gastric folds on endoscopy and EUS and analyzed the predictors of malignant disease (e.g., gastric wall thickness, preservation of five-layered structure, thickened layers). Gastric wall thickness (≥9.8 mm), thickened deep layer, thickened muscularis propria and non-preserved wall layer structures were significantly more prevalent in patients with malignant disease on EUS. Among them, gastric wall thickness (≥9.8 mm) (odds ratio = 6.72, 95% confidence interval = 1.23-36.73, p = 0.028) and thickened muscularis propria (odds ratio = 37.14, 95% confidence interval = 7.02-196.49, p < 0.001) were significantly associated with malignant disease. Our data indicate that EUS is a useful tool for assessing large gastric folds and that gastric wall thickness (≥9.8 mm) and thickened muscularis propria are significant features predictive of malignant disease on EUS.
MeSH term(s)	Adolescent ; Adult ; Aged ; Endosonography/methods ; Female ; Humans ; Image Enhancement/methods ; Image Interpretation, Computer-Assisted/methods ; Male ; Middle Aged ; Observer Variation ; Reproducibility of Results ; Sensitivity and Specificity ; Stomach/diagnostic imaging ; Stomach Neoplasms/diagnostic imaging ; Young Adult
Language	English
Publishing date	2015
Publishing country	England
Document type	Journal Article
ZDB-ID	186150-5
ISSN	1879-291X ; 0301-5629
ISSN (online)	1879-291X
ISSN	0301-5629
DOI	10.1016/j.ultrasmedbio.2015.05.017
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Article ; Online: Risk factors and correlations of immediate, early delayed, and late delayed bleeding associated with endoscopic resection for gastric neoplasms.

Park, So-Eun / Kim, Do Hoon / Jung, Hwoon-Yong / Lim, Hyun / Ahn, Ji Yong / Choi, Kwi-Sook / Lee, Jeong Hoon / Choi, Kee Don / Song, Ho June / Lee, Gin Hyug / Kim, Jin-Ho / Han, Seungbong

Surgical endoscopy

2015 Volume 30, Issue 2, Page(s) 625–632

Abstract: Background: Bleeding is a major complication following endoscopic resection (ER) of gastric mucosal lesions. We aimed to determine the risk factors for post-ER bleeding and their correlations according to the time elapsed since the procedure.: Methods! ...

Abstract	Background: Bleeding is a major complication following endoscopic resection (ER) of gastric mucosal lesions. We aimed to determine the risk factors for post-ER bleeding and their correlations according to the time elapsed since the procedure. Methods: We retrospectively enrolled 670 lesions in 610 patients who underwent ER between March 2009 and December 2010. We classified these lesions into three types in accordance with the bleeding time, i.e., immediate bleeding (IB), early delayed bleeding (EDB), and late delayed bleeding (LDB). We analyzed the risk factors for each bleeding type according to baseline patient characteristics, procedure-related factors, and correlations between the occurrence of each bleeding type. Results: There were 408 post-ER bleeding events in our study cohort: 302 IB events, 88 EDB events, and 18 LDB events. In multivariate analysis, a histologic finding of carcinoma and the resection time were significant predictors of IB (p < 0.001). Of the 302 IB events, 13.9% showed EDB. Additionally, LDB occurred in 2.4% of lesions with EDB and 4.6% of lesions without EDB. Similar to the IB group, of 368 lesions without IB, 12.5% showed EDB. In addition, LDB occurred in 2.2% of lesions with EDB and 1.2% of lesions without EDB. IB was associated with a higher risk of EDB (p < 0.001) and LDB (p < 0.001), whereas EDB was not related to an increased risk of LDB (p = 0.997). Conclusion: IB significantly increases the risk of EDB and LDB, but EDB does not increase the risk of LDB. Histologically confirmed carcinoma or a prolonged time for resection increases the risk of post-ER IB. We recommend careful follow-up approaches following ER of a gastric mucosal lesion in high-risk patients to prevent a potentially critical occurrence of delayed bleeding.
MeSH term(s)	Aged ; Carcinoma/surgery ; Cohort Studies ; Dissection ; Endoscopy ; Female ; Gastric Mucosa/surgery ; Gastroscopy/methods ; Humans ; Linear Models ; Male ; Middle Aged ; Multivariate Analysis ; Odds Ratio ; Operative Time ; Postoperative Hemorrhage/epidemiology ; Retrospective Studies ; Risk Factors ; Stomach Neoplasms/surgery ; Time Factors
Language	English
Publishing date	2015-06-20
Publishing country	Germany
Document type	Journal Article
ZDB-ID	639039-0
ISSN	1432-2218 ; 0930-2794
ISSN (online)	1432-2218
ISSN	0930-2794
DOI	10.1007/s00464-015-4250-6
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Article ; Online: Delayed Bleeding Rate According to the Forrest Classification in Second-Look Endoscopy After Endoscopic Submucosal Dissection.

Na, Shin / Ahn, Ji Yong / Choi, Kee Don / Kim, Mi-Young / Lee, Jeong Hoon / Choi, Kwi-Sook / Kim, Do Hoon / Song, Ho June / Lee, Gin Hyug / Jung, Hwoon-Yong / Kim, Jin-Ho

Digestive diseases and sciences

2015 Volume 60, Issue 10, Page(s) 3108–3117

Abstract: Background and aim: Forrest classification is a valid tool to predict rebleeding rate in peptic ulcer, not in post-endoscopic resection ulcer. We evaluated the delayed bleeding rate in Forrest classification II and III lesions when they were not treated ...

Abstract	Background and aim: Forrest classification is a valid tool to predict rebleeding rate in peptic ulcer, not in post-endoscopic resection ulcer. We evaluated the delayed bleeding rate in Forrest classification II and III lesions when they were not treated in second-look endoscopy. Methods: Between July 2011 and February 2012, 706 lesions in 656 consecutive patients who underwent second-look endoscopy performed on the second day after endoscopic submucosal dissection (ESD) were prospectively investigated. Endoscopic findings were described according to Forrest classification, and late delayed bleeding was defined as bleeding from second-look endoscopy to 1 month. We evaluated the rate of late delayed bleeding in untreated Forrest classification II and III lesions during second-look endoscopy. Results: Among the 706 gastric tumors analyzed, late delayed bleeding after ESD occurred in 29 lesions (4.1%). At second-look endoscopy, Forrest I lesions (immediately treated by endoscopic hemostasis) were found in 63 cases [Ia, 8 lesions (1.1%); Ib, 55 lesions (7.8%)]; there was no further bleeding after discharge. Forrest II and III lesions (not treated in second-look endoscopy) were found in 643 cases [IIa, 62 lesions (8.8%); IIb, 119 lesions (16.9%); IIc, 460 lesions (65.2 %); III, 2 lesions (0.3%)]; and there was no significant difference in the late delayed bleeding rate between these groups [IIa, 2/62 (3.2%); IIb, 5/119 (4.2%); IIc and III, 22/462 (4.8%); P = 1.000]. Conclusions: The rate of late delayed bleeding of post-ESD ulcers with non-bleeding visible vessels was not significantly different from that of ulcers with non-visible vessels ( http://cris.nih.go.kr , identifier KCT0000268).
MeSH term(s)	Adenocarcinoma/pathology ; Adenocarcinoma/surgery ; Aged ; Chi-Square Distribution ; Cohort Studies ; Endoscopy/adverse effects ; Endoscopy/methods ; Female ; Follow-Up Studies ; Gastric Mucosa/pathology ; Gastric Mucosa/surgery ; Gastroscopy/methods ; Hemostasis, Endoscopic/methods ; Hospitals, Teaching ; Humans ; Incidence ; Korea ; Logistic Models ; Male ; Middle Aged ; Multivariate Analysis ; Neoplasm Invasiveness/pathology ; Neoplasm Staging ; Postoperative Hemorrhage/classification ; Postoperative Hemorrhage/epidemiology ; Postoperative Hemorrhage/therapy ; Prospective Studies ; Republic of Korea ; Risk Assessment ; Second-Look Surgery/methods ; Statistics, Nonparametric ; Stomach Neoplasms/pathology ; Stomach Neoplasms/surgery ; Time Factors ; Treatment Outcome
Language	English
Publishing date	2015-10
Publishing country	United States
Document type	Journal Article
ZDB-ID	304250-9
ISSN	1573-2568 ; 0163-2116
ISSN (online)	1573-2568
ISSN	0163-2116
DOI	10.1007/s10620-015-3693-x
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