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Currently Available Non-balloon Devices
Hang Lak Lee 대한소화기내시경학회 2018 Clinical Endoscopy Vol.51 No.5
Obesity and metabolic syndrome are known to have an impact on the economy. Obesity and metabolic syndrome affect about 40%population in the America alone, and with about 400 million obese adults in the world, obesity is a global concern. Moreover, theprevalence of overweight children is increasing. Bariatric surgery remains the gold standard for the treatment of obesity; however,endoscopic approaches may have a significant role in the management of metabolic syndrome and obesity. Until recently, manyendoscopic methods have been introduced; however, few methods are used in practice, whereas others are under experimental research. Endoscopists have an important role in the treatment of obesity because endoscopic therapies have demonstrated their safety andeffcacy over the past few years. Endoscopic bariatric therapies can be categorized as follows: space occupying, malabsorption, andgastric volume reduction. In this review, we summarize the currently available non-balloon type endoscopic procedure.
Lee Hang Lak,Han Dong Soo,Kim Jin Bae,전용철,손주현,함준수 대한의학회 2004 Journal of Korean medical science Vol.19 No.3
A 47-yr-old man with hepatitis B virus associated liver cirrhosis was admitted to our hospital with diarrhea and generalized edema and diagnosed as protein-losing en-teropathy due to intestinal lymphangiectasia by intestinal biopsy and 99m Tc albumin scan. During hospitalization, he received subcutaneous octreotide therapy. After 2 weeks of octreotide therapy, follow-up albumin scan showed no albumin leakage, and the serum albumin level was sustained. We speculate that liver cirrhosis can be a cause of intestinal lymphangiectasia and administration of octreotide should be considered for patients with intestinal lymphangiectasia whose clinical and bio-chemical abnormalities do not respond to a low-fat diet.
Hang Lak Lee,Myung Ju Ahn,Jung Hye Choi,Woon Hyun Jun,Young Yuel Lee,In Soon Kim,Il Young Choi,Se Jin Jang,Yong Wook Park 대한내과학회 2002 The Korean Journal of Internal Medicine Vol.17 No.1
NK/T-cell lymphoma, which often shows an angiocentric growth pattern, is a distinct clinicopathologic entity highly associated with Epstein-Barr virus. The disease is characterized by a destruction of the upper respiratory tract, particularly the nasal cav
Hang Lak Lee,Joo Young Cho,조준형,Jong-Jae Park,Chan Gyoo Kim,Seong Hwan Kim,Joung-Ho Han 대한소화기내시경학회 2018 Clinical Endoscopy Vol.51 No.1
Background/Aims: Currently, a new over-the-scope clip (OTSC) system has been introduced. This system has been used forgastrointestinal perforations and fistulas in other countries. The aim of our study is to examine the therapeutic success rate ofendoscopic treatment using the OTSC system in Korea. Methods: This was a multicenter prospective study. A total of seven endoscopists at seven centers performed this procedure. Results: A total of 19 patients were included, with gastrointestinal leakages from anastomosis sites, fistulas, or esophageal perforationsdue to Boerhaave’s syndrome. Among these, there were three gastrojejunostomy sites, three esophagojejunostomy sites, fouresophagogastrostomy sites, one esophagocolonostomy site, one jejuno-jejunal site, two endoscopic full thickness resection site closures,one Boerhaave’s syndrome, two esophago-bronchial fistulas, one gastrocolonic fistula, and one colonopseudocyst fistula. The size of theleakage ranged from 5 to 30 mm. The median procedure time was 16 min. All cases were technically successful. Complete closure ofthe leak was achieved in 14 of 19 patients using OTSC alone. Conclusions: The OTSC system is a safe and effective method for the management of gastrointestinal leakage, especially in cases ofanastomotic leakage after surgery.
Hang Lak Lee 대한소화기내시경학회 2016 Clinical Endoscopy Vol.49 No.3
Until now, biopsy methods for subepithelial tumors (SETs) have focused on endoscopic ultrasound (EUS)-guided biopsy; however, these methods have several limitations. We devised a simple method for pathologic diagnosis of SETs. SETs are occasionally diagnosed during endoscopy, and lesions are generally small and asymptomatic. It can be challenging to decide on a management plan for large asymptomatic SETs. EUS imaging provides information regarding the size, layer, and echo pattern of the lesions. Patient management plans have traditionally been determined based on EUS images, whereby the endoscopist chooses to either monitor or remove the tumor. However, EUS alone cannot diagnose and evaluate upper gastrointestinal SETs with high accuracy. As sufficient tissue samples are required for the accurate diagnosis of SETs, EUS-guided biopsy techniques such as EUS fine-needle aspiration and trucut biopsy are currently used. However, these methods have a relatively low diagnostic accuracy and do not always provide information upon immunohistochemical staining. Endoscopists can easily detect a submucosal mass after creating an iatrogenic mucosal ulcer, after which tissue sampling is performed by using endoscopic biopsy. Furthermore, pathologic results can differentiate between benign and premalignant lesions. Here, we introduce a simple method for the pathologic diagnosis of SETs.
이항락 ( Hang Lak Lee ),손주현 ( Joo Hyun Sohn ),김진배 ( Jin Bae Kim ),한동수 ( Dong Soo Han ),전용철 ( Yong Chul Jeon ),함준수 ( Joon Soo Hahm ),이동후 ( Dong Hoo Lee ),기춘석 ( Chun Suk Kee ),박용욱 ( Yong Wook Park ) 대한소화기학회 2005 대한소화기학회지 Vol.46 No.3
Leiomyosarcoma is an uncommon tumor which arises from various sites including uterus, stomach, retroperitoneum, superficial soft tissues, bladder, kidney, and lung. Primary hepatic leiomyosarcoma is a very rare tumor and fewer than 70 cases of primary hepatic leiomyosarcoma have been reported since the first publication in Japan. And there was only one case report of cutaneous metastasis from hepatic leiomyosarcoma. We recently experienced a case of primary hepatic leiomyosarcoma presenting as subcutaneous palpable mass. Herein we report this case with a review of literatures. (Korean J Gastroenterol 2005;46:233-236)