• Journal of Gastric Cancer
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• v.24 no.3
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• pp.327-340
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• 2024

Purpose: Results of initial endoscopic biopsy of gastric lesions often differ from those of the final pathological diagnosis. We evaluated whether an artificial intelligence-based gastric lesion detection and diagnostic system, ENdoscopy as AI-powered Device Computer Aided Diagnosis for Gastroscopy (ENAD CAD-G), could reduce this discrepancy. Materials and Methods: We retrospectively collected 24,948 endoscopic images of early gastric cancers (EGCs), dysplasia, and benign lesions from 9,892 patients who underwent esophagogastroduodenoscopy between 2011 and 2021. The diagnostic performance of ENAD CAD-G was evaluated using the following real-world datasets: patients referred from community clinics with initial biopsy results of atypia (n=154), participants who underwent endoscopic resection for neoplasms (Internal video set, n=140), and participants who underwent endoscopy for screening or suspicion of gastric neoplasm referred from community clinics (External video set, n=296). Results: ENAD CAD-G classified the referred gastric lesions of atypia into EGC (accuracy, 82.47%; 95% confidence interval [CI], 76.46%-88.47%), dysplasia (88.31%; 83.24%-93.39%), and benign lesions (83.12%; 77.20%-89.03%). In the Internal video set, ENAD CAD-G identified dysplasia and EGC with diagnostic accuracies of 88.57% (95% CI, 83.30%-93.84%) and 91.43% (86.79%-96.07%), respectively, compared with an accuracy of 60.71% (52.62%-68.80%) for the initial biopsy results (P<0.001). In the External video set, ENAD CAD-G classified EGC, dysplasia, and benign lesions with diagnostic accuracies of 87.50% (83.73%-91.27%), 90.54% (87.21%-93.87%), and 88.85% (85.27%-92.44%), respectively. Conclusions: ENAD CAD-G is superior to initial biopsy for the detection and diagnosis of gastric lesions that require endoscopic resection. ENAD CAD-G can assist community endoscopists in identifying gastric lesions that require endoscopic resection.

• Clinical Endoscopy
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• v.55 no.2
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• pp.167-182
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• 2022

Sedation can resolve anxiety and fear in patients undergoing endoscopy. The use of sedatives has increased in Korea. Appropriate sedation is a state in which the patient feels subjectively comfortable while maintaining the airway reflex for stable spontaneous breathing. The patient should maintain a state of consciousness to the extent that he or she can cooperate with the needs of the medical staff. Despite its benefits, endoscopic sedation has been associated with cardiopulmonary complications. Cardiopulmonary complications are usually temporary. Most patients recover without sequelae. However, they may progress to serious complications, such as cardiovascular collapse. Therefore, it is essential to screen high-risk patients before sedation and reduce complications by meticulous monitoring. Additionally, physicians should be familiar with the management of emergencies. The first Korean clinical practice guideline for endoscopic sedation was developed based on previous worldwide guidelines for endoscopic sedation using an adaptation process. The guideline consists of nine recommendations based on a critical review of currently available data and expert consensus when the guideline was drafted. These guidelines should provide clinicians, nurses, medical school students, and policy makers with information on how to perform endoscopic sedation with minimal risk.

• Journal of The Korean Radiological Technologist Association
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• v.25 no.1
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• pp.19-19
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• 1999

We evaluated the effectiveness of continuous spot projection(CSP) for the diagnosis of choledochocele on endoscopic retrograde cholangiography ( ERC ) We performed of 37 patients, who had choledochocele symptom. This study was classified into general ERC

• Journal of Korean Neurosurgical Society
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• v.60 no.3
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• pp.306-314
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• 2017

Endoscopic third ventriculostomy (ETV) has now become an accepted mode of hydrocephalus treatment in children. Varying degrees of success for the procedure have been reported depending on the type and etiology of hydrocephalus, age of the patient and certain technical parameters. Review of these factors for predictability of success, complications and validation of success score is presented.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2007.10a
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• pp.567-567
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• 2007

• Korean Journal of Bronchoesophagology
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• v.14 no.2
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• pp.17-21
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• 2008

Endoscopic ultrasonography (EUS) has been developed for the diagnosis of various gastrointestinal diseases or extra-gastrointestinal diseases, and extended to interventional approach. In fields of mediastinal diseases, EUS is an effective diagnostic method for the staging of esophageal cancer, lung cancer and other mediastinal diseases. Recently, EUS guided fine needle aspiration or biopsy makes the histologic diagnosis possible in various mediastinal diseases, and would reserve many avoidable surgical cases.

• Journal of Medicine and Life Science
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• v.16 no.1
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• pp.27-30
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• 2019

We describe a case of a 48-year-old Korean woman who had a subepithelial mass incidentally discovered by endoscopic examination. Endoscopic mucosal resection revealed a well-circumscribed whitish solid mass within the submucosal space. Microscopically, the tumor was comprised of sparse spindle cells in the dense collagenous stroma with several calcifications and lymphoid aggregates. Immunohistochemical analysis showed that the tumor cells are negative for c-kit, smooth muscle actin, desmin, S-100 and CD34. Based on these findings, the tumor was diagnosed with calcifying fibrous tumor.

• Journal of Digestive Cancer Research
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• v.1 no.2
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• pp.78-81
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• 2013

With advances in technology, advances in the understanding of biology of cancer, and the advent of improved and novel therapies, the role of the gastroenterologist has been modified greatly over the past 2 decades, and continues to be shaped by the knowledge, skill, and opportunity to capitalize on the unique position that gastroenterologists hold in the patient care continuum. The gastroenterologist is evolving from a "pure" diagnostician to an endoscopic surgeon, a geneticist, a nutritionist, an immunologist and chemotherapist, and palliative care physician.

• Journal of Digestive Cancer Research
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• v.11 no.2
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• pp.99-103
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• 2023

Malignant tumors located near the papilla of the duodenum can cause concomitant biliary and duodenal obstruction, which reduces the quality of life and increases the morbidity and mortality. Apart from traditional surgical treatment methods, various treatment methods such as endoscopic treatment and radiological interventions are used for the treatment. This study aimed to explore treatment methods according to the situation of patients with malignant biliary obstruction combined with duodenal obstruction.

• 대한위암학회:학술대회논문집
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• 2004.11a
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• pp.7-14
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• 2004