• 전기학회논문지
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• 제67권7호
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• pp.928-933
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• 2018

Nowadays, gastropathy is a common disease. As endoscopic equipment are developed and used widely, it is possible to provide a large number of endoscopy images. Computer-aided Diagnosis (CADx) systems aim at helping physicians to identify possibly malignant abnormalities more accurately. In this paper, we present a CADx system to detect and classify the abnormalities of gastric lesions which include bleeding, ulcer, neuroendocrine tumor and cancer. We used an Inception module based deep learning model. And we used data augmentation for learning. Our preliminary results demonstrated promising potential for automatically labeled region of interest for endoscopy doctors to focus on abnormal lesions for subsequent targeted biopsy, with Az values of Receiver Operating Characteristic(ROC) curve was 0.83. The proposed CADx system showed reliable performance.

• 대한후두음성언어의학회지
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• 제13권2호
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• pp.188-192
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• 2002

Unilateral vocal cord palsy which is associated with laryngeal trauma is not uncommon event. In a 42-year-old male, a cricoid cartilage fracure had been developed after blunt trauma. The endoscopic findings showed contusion and diffuse swelling around the left arytenoid and false cord. During phonation, the mobility of left side true vocal cord was decreased. There were no level difference and displacement of the left side arytenoid. We used the laryngeal electromyography (LEMG) to make a differential diagnosis between the cricoarytenoid joint dislocation and the injury of recurrent laryngeal nerve. At the right thyroarytenoid muscle and cricothyroid muscle, the findings of LEMG were normal. But the amplitude and frequency during phonation were decreased (partial denervation) at the left thyroarytenoid muscle. LEMG is a very useful method to predict the diagnosis of vocal cord palsy.

• Journal of Digestive Cancer Research
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• 제10권2호
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• pp.56-64
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• 2022

Narrow-band imaging (NBI) is the most widely used image-enhanced endoscopic technique. The superficial microanatomy of gastric mucosa can be visualized when used with a magnifying endoscopy with narrow-band imaging (ME-NBI). The diagnostic criteria for early gastric cancer (EGC), using the classification system for microvascular and microsurface pattern of ME-NBI, have been developed, and their usefulness has been proven in the differential diagnosis of small depressed cancer from focal gastritis and in lateral extent delineation of EGC. Some studies reported on the prediction of histologic differentiation and invasion depth of gastric cancer using ME-NBI; however, its application is limited in clinical practice, and further well-designed studies are necessary. Clinicians should understand the ME-NBI classification system and acquire appropriate diagnostic skills through various experiences and training to improve the quality of endoscopy for EGC diagnosis.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제23권5호
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• pp.411-422
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• 2020

With the increasing number of children with inflammatory bowel disease (IBD), very early-onset IBD (VEO-IBD), defined as IBD that is diagnosed or that develops before 6 years of age, has become a field of innovation among pediatric gastroenterologists. Advances in genetic testing have enabled the diagnosis of IBD caused by gene mutations, also known as monogenic or Mendelian disorder-associated IBD (MD-IBD), with approximately 60 causative genes reported to date. The diagnosis of VEO-IBD requires endoscopic and histological evaluations. However, satisfactory small bowel imaging studies may not be feasible in this small population. Both genetic and immunological approaches are necessary for the diagnosis of MD-IBD, which can differ among countries according to the available resources. As a result of the use of targeted gene panels covered by the national health insurance and the nationwide research project investigating inborn errors of immunity, an efficient approach for the diagnosis of MD-IBD has been developed in Japan. Proper management of VEO-IBD by pediatric gastroenterologists constitutes a challenge. Some MD-IBDs can be curable by allogenic hematopoietic stem cell transplantation. With an understanding of the affected gene functions, targeted therapies are being developed. Social and psychological support systems for both children and their families should also be provided to improve their quality of life. Multidisciplinary team care would contribute to early diagnosis, proper therapeutic interventions, and improved quality of life in patients and their families.

• Journal of Gastric Cancer
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• 제10권1호
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• pp.1-4
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• 2010

목적: 위점막 이형성증은 "위선암과 연관이 있거나 침습성 위선암으로 발전할 가능성이있는 명백한 종양성 상피"로정의되고 있으며 만성위염에서의 암 발생기전에서도 전암성 병변으로 여겨지고 있다. 이에 저자들은 내시경 겸자 생검에서 위점막 이형성증으로 진단된 환자에 대한 적절 한 치료방침을 결정하고자 본 연구를 시행하였다. 대상 및 방법: 2006년 1월부터 2008년 12월까지 3년 동안 내시경 겸자 생검으로 위점막 이형성증으로 진단받고 내시경 점막절제 또는 내시경 점막하 박리술을 시행한 148예를 대상으로 하였으며 내시경 겸자 생검 결과와 최종 조직병리 결과를 비교하였다. 결과: 148예의 환자 중 고도 이형성증 63예, 저도 이형성증 85예였으며 최종 병리 결과 위선암 49예(33.8%), 고도이형성증 40예(27.0%), 저도 이형성증 59예(39.9%)였다. 고도 이형성증으로 진단된 63예는 최종 조직병리 결과 위선암34예(54.0%), 고도 이형성증 20예(31.7%), 저도 이형성증 9예(14.3%)였으며 저도 이형성증으로 진단된 85예는 위선암 15예(17.6%), 고도이형성증 20예(23.5%), 저도이형성증 50예(58.8%)였다.결론: 내시경 겸자 생검 결과 위점막 이형성증으로 진단된 경우 고도 이형성증의 경우는 내시경을 이용한 점막절제 또는 점막하 박리술을 통한 절제술을 시행하고 저도이형성증의 경우 주기적인 감시 및 재생검 뿐 아니라 정확한 진단을 위한 내시경 점막절제 등이 고려되어야 할것이다.

• 대한방사선협회지
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• 제25권1호
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• pp.283-291
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• 1999

• 한국임상수의학회:학술대회논문집
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• 한국임상수의학회 2006년도 춘계학술대회
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• pp.180-180
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• 2006

• Journal of Chest Surgery
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• 제23권5호
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• pp.994-997
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• 1990

We are reporting a case of esophageal hemangioma, which is a very rare disease with only 24 cases having been reported. A 31-year-old male with dysphagia was shown to have a hemangioma of the upper thoracic esophagus and resection of the lesion cured this problem. Once diagnosed in symptomatic patient, treatment should be instituted because of followings; 1. growth potency to large size, 2. possible complications such as hemorrhage and obstruction, and 3. exclusion diagnosis of malignancy. Surgery is the treatment of choice due to its effectiveness and safety, but endoscopic removal may be possible for small tumors and those on a pedicle.

• 대한기관식도과학회지
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• 제15권2호
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• pp.11-18
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• 2009

Foreign bodies of the upper aerodigestive tract in the pediatric population are a common occurrence. However, despite significant advances in prevention, first aid and endoscopic technology, they remain a diagnostic and therapeutic challenge. Early diagnosis is the key to successful and uncomplicated management of these accidents. An orderly and systematic approach to these patients including a careful history, physical exam and radiographic studies is detailed in this review.

• Journal of Digestive Cancer Research
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• 제10권1호
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• pp.39-42
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• 2022

Primary duodenal follicular lymphoma is rare and presents as multiple, small polyp-like lesions on endoscopy. If this lesion is suspected, an endoscopic biopsy is crucial for diagnosis. A watchful wait would be appropriate management as it has a fairly indolent clinical course. Herein, we present a rare case of primary duodenal follicular lymphoma.