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Early extrahepatic recurrence as a pivotal factor for survival after hepatocellular carcinoma resection:A 15-year observational study

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World Journal of Gastroenterology 2022年第36期28卷 5351-5363页

作者： Jae Hyun Yoon sung kyu choi sung Bum Cho Hee Joon Kim Yang Seok Ko Chung Hwan Jun Department of Gastroenterology and Hepatology Chonnam National University Hospital and College of MedicineGwangju 61469South Korea Department of Gastroenterology and Hepatology Hwasun Chonnam National University Hospital and College of MedicineHwasun 58128South Korea Department of Surgery Chonnam National University Hospital and College of MedicineGwangju 61469South Korea Department of Surgery Hwasun Chonnam National University Hospital and College of MedicineHwasun 58128South Korea Department of Internal Medicine Mokpo Hankook HospitalMokpo 58643South Korea

BACKGROUND Surgical resection is one of the most widely used modalities for the treatment of hepatocellular carcinoma(HCC).Early extrahepatic recurrence(EHR)of HCC after surgical resection is considered to be closely associated with poor ***,data regarding risk factors and survival outcomes of early EHR after surgical resection remain *** To investigate the clinical features and risk factors of early EHR and elucidate its association with survival *** From January 2004 to December 2019,we enrolled treatment-naïve patients who were≥18 years and underwent surgical resection for HCC in two tertiary academic *** excluding patients with tumor types other than HCC and/or ineligible data,this retrospective study finally included 779 *** resection of HCC was performed according to the physicians’decisions and the EHR was diagnosed based on contrast-enhanced computed tomography or magnetic resonance imaging,and pathologic confirmation was performed in selected *** Cox regression analysis was performed to identify the variables associated with *** Early EHR within 2 years after surgery was diagnosed in 9.5%of patients during a median followup period of 4.4 *** recurrence-free survival period was 5.2 mo,and the median time to EHR was 8.8 mo in patients with early *** 52.7%of patients with early EHR,EHR occurred as the first recurrence of HCC after surgical *** multivariate analysis,serum albumin100 U/L,surgical margin involvement,venous and/or lymphatic involvement,satellite nodules,tumor necrosis detected by pathology,tumor size≥7 cm,and macrovascular invasion were determined as risk factors associated with early *** sub-categorizing the patients according to the number of risk factors,the rates of both EHR and survival showed a significant correlation with the risk of early ***,multivariate analysis revealed that early E

关键词： Early extrahepatic recurrence Hepatocellular carcinoma Prognosis Surgery Survival

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Underwater endoscopic mucosal resection for neoplasms in the pyloric ring of the stomach: Four case reports

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World Journal of Clinical Cases 2020年第14期8卷 3050-3056页

作者： Dong Hyun Kim Seon-Young Park Chang Hwan Park Hyun Soo Kim sung kyu choi Division of Gastroenterology Department of Internal MedicineChonnam National University Hospital and Medical SchoolGwangju 61469South Korea

BACKGROUND Tumors located in the pylorus are technically more complex to resect by endoscopic resection,as the anatomical characteristics of this region can affect the adequate assessment of margins and performance of the *** reported the results of underwater endoscopic mucosal resection(UEMR)of benign mucosal neoplasms located in the pyloric *** SUMMARY This case series describes 4 patients with 4 mucosal neoplasms located in the pyloric *** diameter of each neoplasm was less than 15 *** performed UEMR for the *** immersion enabled slight floating of the lesions,resulting in easy *** achieved en bloc resection with a snare and electrosurgical *** procedure were performed within 3 min without adverse *** examination showed low-grade dysplasia with clear resection margins in one case and hyperplastic polyps in three *** UEMR can be an effective and safe treatment method for neoplasms in the gastric pyloric ring.

关键词： Duodenoscopy Endoscopic mucosal resection Neoplasm Pylorus Stomach Case report

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Acute respiratory distress syndrome and severe pneumonitis after atezolizumab plus bevacizumab for hepatocellular carcinoma treatment:A case report

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World Journal of Gastrointestinal Oncology 2023年第5期15卷 892-901页

作者： Su Hyeon Cho Ga Ram You Chan Park Sang-Geon Cho Jong Eun Lee sung kyu choi sung Bum Cho Jae Hyun Yoon Department of Gastroenterology and Hepatology Chonnam National University Hospital and Medical SchoolGwangju 61469South Korea Department of Gastroenterology and Hepatology Hwasun Chonnam National University Hospital and Medical SchoolHwasun 58128South Korea Department of Radiology Chonnam National University Hospital and Medical SchoolGwangju 61469South Korea Department of Nuclear Medicine Chonnam National University HospitalHwasun 58128South Korea

BACKGROUND Hepatocellular carcinoma(HCC)is one of the most common cancers worldwide and has a high ***,the treatment options for advanced HCC are limited to tyrosine kinase inhibitors,such as sorafenib and *** previous regimens have an insufficient efficacy,the combination therapy of atezolizumab and bevacizumab(Ate/Bev)has been investigated,which showed an improvement in progression-free and overall ***,the adverse events of this combination therapy in advanced HCC have not been ***,we report a novel case of an unresectable HCC and acute respiratory distress syndrome(ARDS)after a combination therapy of Ate/*** SUMMARY An 82-year-old male visited our outpatient clinic for an incidentally detected liver *** magnetic resonance imaging and enhanced chest computed tomography(CT)were performed,which showed arterial hyperenhancement with washout in delayed phase suggesting HCC,and a well-defined metastatic solid nodule,respectively.F-18 fluorodeoxyglucose positron emission tomography(PET)-CT exhibited multiple hypermetabolic lesions in the iliac bone,lumbar vertebrae,and *** of the high burden of the intrahepatic tumor,transarterial radioembolization was initially performed;after 37 d,a combination therapy of Ate/Bev was *** patient visited the emergency department three days after Ate/Bev treatment complaining of *** was diagnosed with severe pneumonitis based on *** administering oxygen via a high-flow nasal cannula,the P/F ratio was only 74;therefore,the patient was diagnosed with ARDS based on the overall examination *** tidal volume with high positive end-expiratory pressure,sedative agents combined with a neuromuscular blocker,and a systemic steroid were promptly applied to manage the ***,the patient did not recover from the hypoxia and expired 31 h after being *** Clinicians should be aware of severe pneumonitis due to the immune-

关键词： Hepatocellular carcinoma Systemic therapy Adverse events Pneumonitis Atezolizumab Acute respiratory distress syndrome

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Cerebral and splenic infarctions after injection of N-butyl-2-cyanoacrylate in esophageal variceal bleeding

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World Journal of Gastroenterology 2013年第34期19卷 5759-5762页

作者： Dae-Seong Myung Cho-Yun Chung Hyung-Chul Park Jong-Sun Kim sung-Bum Cho Wan-Sik Lee sung-kyu choi Young-Eun Joo Department of Internal Medicine Chonnam National University Medical School

Variceal bleeding is the most serious complication of portal hypertension,and it accounts for approximately one fifth to one third of all deaths in liver cirrhosis ***,endoscopic treatment remains the predominant method for the prevention and treatment of variceal *** treatments include band ligation and injection *** sclerotherapy with N-butyl-2-cyanoacrylate has been successfully used to treat variceal *** injection sclerotherapy with N-butyl-2-cyanoacrylate provides effective treatment for variceal bleeding,injection of N-butyl-2-cyanoacrylate is associated with a variety of complications,including systemic ***,we report a case of cerebral and splenic infarctions after the injection of N-butyl-2-cyanoacrylate to treat esophageal variceal bleeding.

关键词： Cerebrum Esophageal varix Infarction N-butyl-2-cyanoacrylate Spleen

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Risk factors for hepatocellular carcinoma in patients with drug-resistant chronic hepatitis B

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World Journal of Gastroenterology 2013年第40期19卷 6834-6841页

作者： Chung Hwan Jun Hyoung Ju Hong Min Woo Chung Seon Young Park sung Bum Cho Chang Hwan Park Young Eun Joo Hyun Soo Kim sung kyu choi Jong Sun Rew Department of Internal Medicine Chonnam National University Medical SchoolGwangju 501-757South Korea

AIM:To investigate the risk factors and characteristics of hepatocellular carcinoma(HCC) in the patients with drug-resistant chronic hepatitis B(CHB).METHODS:A total of 432 patients with drug-resistant CHB were analyzed retrospectively from January 2004to December 2012. The patients were divided into two groups:the HCC group(n = 57) and the non-HCC group(n = 375). Two groups compared using logistic regression for various patients and viral characteristics in order to identify associated risk factors for ***,patient and tumor characteristics of HCC patients with na ve CHB(N group,n = 117) were compared to the HCC group(R group,n = 57) to identify any difference in HCC characteristics between ***:A significant difference was found for age,platelet count,alpha-fetoprotein(AFP),positivity of HBeAg,seroconversion rate of HBeAg,virologic response,the Child-Pugh score,presence of rtM204I,and the duration of antiviral treatment in non-HCC and HCC group. Cirrhosis,age(> 50 years),HBeAg(+),virologic non-responder status,and rtM204I mutants were independent risk factors for the development of HCC. The R group had lower serum C-reactive protein(CRP) and AFP levels,earlier stage tumors,and a shorter mean tumor surveillance period than the N group. However,the total follow-up duration was not significantly different between the two ***:13.2% of patients with drug-resistant CHB developed HCC. Age,cirrhosis,YIDD status,HBeAg status,and virologic response are associated with risk of HCC. Patients with drug-resistant CHB and these clinical factors may benefit from closer HCC surveillance.

关键词： Carcinoma Hepatocellular Hepatitis B Drug resistance Risk factors Characteristics

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Clinical significance and risk factors of postembolization fever in patients with hepatocellular carcinoma

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World Journal of Gastroenterology 2013年第2期19卷 284-289页

作者： Chung Hwan Jun Ho Seok Ki Hoon Ki Lee Kang Jin Park Seon Young Park sung Bum Cho Chang Hwan Park Young Eun Joo Hyun Soo Kim sung kyu choi Jong Sun Rew Division of Gastroenterology Department of Internal MedicineChonnam National University Medical SchoolGwangju 501-757South Korea

AIM:To investigate tumor response and survival in patients with postembolization fever(PEF) and to determine the risk factors for ***:Four hundred forty-three hepatocellular carcinoma(HCC) patients who underwent the first session of transcatheter arterial chemoembolization(TACE) between January 2005 and December 2009 were analyzed *** was defined as a body temperature greater than 38.0 ℃ that developed within 3 d of TACE without evidence of *** tumor progression-free interval was defined as the interval from the first TACE to the second TACE based on mRECIST *** staging was based on the American Joint Committee on Cancer tumor,node,metastases(TNM) classification of malignant *** patients were admitted before their 1 st TACE treatment,and blood samples were obtained from all patients before and after *** variables and host-related variables were compared between two groups:patients with PEF vs patients without ***,variables related to 20-mo mortality and tumor progression-free survival were ***:The study population comprised 370(85.4%) men and 73(14.6%) women with a mean age of 62.29 ± 10.35 years.A total of 1836 TACE sessions were conducted in 443 patients,and each patient received between 1 and 27(mean:4.14 ± 3.57) TACE *** mean follow-up duration was 22.23 ± 19.6 mo(range:0-81 mo).PEF developed in 117 patients(26.41%) at the time of the first TACE *** was not associated with 20-mo survival(P = 0.524) or computed tomography(CT) response(P = 0.413) in a univariate analysis.A univariate analysis further indicated that diffuse-type HCC(P = 0.021),large tumor size(≥ 5 cm)(P = 0.046),lipiodol dose(≥ 7 mL,P = 0.001),poor blood glucose control(P = 0.034),alanine aminotransferase(ALT) value after TACE(P = 0.004) and C-reactive protein(CRP) value after TACE(P = 0.036) served as possible risk factors correlated with *** ALT value after TACE(P = 0.02

关键词： Chemoembolization Therapeutic Fever Carcinoma Hepatocellular Prognosis Progression-free survival

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Cytomegalovirus colitis induced segmental colonic hypoganglionosis in an immunocompetent patient: A case report

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World Journal of Clinical Cases 2021年第20期9卷 5631-5636页

作者： Ban Seok Kim Seon-Young Park Dong Hyun Kim Nah Ihm Kim Jae Hyun Yoon Jae kyun Ju Chang Hwan Park Hyun Soo Kim sung kyu choi Department of Gastroenterology Chonnam National University HospitalGwangju 501-757South Korea Department of Pathology Chonnam National University HospitalGwangju 501-757South Korea Department of Surgery Chonnam University HospitalGwangju 501-757South Korea

BACKGROUND Cytomegalovirus(CMV)colitis is usually seen in immunocompromised patients with risk factors such as human immunodeficiency virus infection,solid organ transplant,inflammatory bowel disease,or ***,many clinicians usually do not consider the possibility of CMV colitis in immunocompetent *** reported a rare case of segmental colonic hypoganglionosis associated with CMV colitis in an immunocompetent *** SUMMARY A 48-year-old woman with no underlying disease was admitted to our hospital for severe abdominal pain and *** tomography of the abdomen showed diffuse dilatation of the small intestine and the entire *** sigmoidoscopic findings and result of polymerase chain reaction(PCR)for CMV revealed the compatible findings of CMV colitis,the patient was treated with intravenous *** treatment,sigmoidoscopic findings and CMV PCR results *** the patient continued to suffered from *** months after the initial admission,patient visited the emergency department with severe abdominal pain and imaging revealed aggravation of fecal impaction and bowel *** performed subtotal colectomy to control patient’s *** examination of the resected specimen showed significantly reduced number of mature ganglion cells in the sigmoid colon compared to that in the proximal *** Our case demonstrates that CMV colitis can develop even in patients with no other underlying disease,and that CMV colitis can be one of the causes for developing colonic hypoganglionosis.

关键词： Colonic pseudo-obstruction Colitis Cytomegalovirus Ganglia Case report

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h─STABILITY FOR NONLINEAR PERTURBED SYSTEMS

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Annals of Differential Equations 1995年第1期11卷 1-9页

作者： sung kyu choi and Nam Jip Koo (Chungnam National University, Korea)

In this paper, we obtain 'Roughness' theorems for h-stability of the nonlinear perturbed systems using the comparison method and some integral inequalities.

关键词： Nonliear perturbed systems h-stability h-stability in variation

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ASYMPTOTIC EQUIVXLENCE BETWEEN TWO LINEAR DIFFERENTIAL SYSTEMS

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Annals of Differential Equations 1997年第1期13卷 44-52页

作者： sung kyu choi(Chuttgnam National University, Korea)Yoon Hoe Goo(Hanseo University, Korea)Nam Jip Koo(Chungnam National University, Korea)

In this paper, we study the asymptotic equivalence between two systems

关键词： Asymptotic Equivalence Class H

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Zero-static-power nonvolatile logic-in-memory circuits for flexible electronics

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Nano Research 2017年第7期10卷 2459-2470页

作者： Byung ChulJang Sang Yoon Yang Hyejeong seong sung kyu Kim Junhwan choi sung Gap Im sung-Yool choi School of Electrical Engineering Graphene/2D Materials Research Center Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea Department of Chemical and Biomolecular Engineering Graphene/2D Materials Research Center Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea

Flexible logic circuits and memory with ultra-low static power consumption are in great demand for battery-powered flexible electronic systems. Here, we show that a flexible nonvolatile logic-in-memory circuit enabling normally-off computing can be implemented using a poly（1,3,5-trivinyl-l,3,5-trimethyl cyclotrisiloxane）（pV3D3）-based memristor array. Although memristive logic-in-memory circuits have been previously reported, the requirements of additional components and the large variation of memristors have limited demonstrations to simple gates within a few operation cycles on rigid substrates only. Using memristor-aided logic （MAGIC） architecture requiring only memristors and pV3D3-memristor with good uniformity on a flexible substrate, for the first time, we experimentally demonstrated our implementation of MAGIC-NOT and -NOR gates during multiple cycles and even under bent conditions. Other functions, such as OR, AND, NAND, and a half adder, are also realized by combinations of NOT and NOR gates within a crossbar array. This research advances the development of novel computing architecture with zero static power consumption for battery- powered flexible electronic systems.

关键词： memristor memristive logic circuit flexible nonvolatilelogic-in-memory circuit normally-off computing memristor-aided logic(MAGIC) architecture

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