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Dive into the research topics where Soo Cheol Jeong is active.

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Featured researches published by Soo Cheol Jeong.


Journal of Gastroenterology | 2007

Pretreatment predictor of response, time to progression, and survival to intraarterial 5-fluorouracil/interferon combination therapy in patients with advanced hepatocellular carcinoma

Kiminori Uka; Shintaro Takaki; Daiki Miki; Tomokazu Kawaoka; Soo Cheol Jeong; Shoichi Takahashi; Naoyuki Toyota; Katsuhide Ito; Kazuaki Chayama

BackgroundSeveral studies have reported survival benefits of combination therapy with intraarterial 5-fluorouracil (5-FU) and subcutaneous interferon (IFN) α for advanced hepatocellular carcinoma (HCC) with portal vein tumor thrombosis (PVTT). We investigated the pretreatment predictive factors of early response, time to progression (TTP), and survival in response to intraarterial 5-FU/IFN combination therapy.MethodsPatients with nonresectable HCC and variable PVTT grades (without PVTT to PVTT in the trunk) received intraarterial 5-FU/IFN combination therapy (n = 55).ResultsAfter two courses of the combination therapy, 1 (2%), 15 (27%), 16 (29%), 12 (22%), and 11 (20%) of 55 patients showed complete response (CR), partial response (PR), stable disease (SD), progressive disease (PD), or had dropped out (DO), respectively, when their early response to treatment was assessed. Univariate analysis identified only hepatitis C virus (HCV) antibody positivity as having significantly influenced the early response (P = 0.028) and TTP (P = 0.021). Multivariate analysis identified performance status (P = 0.003) and HCV antibody positivity (P = 0.007) as significant and independent determinants of survival. PVTT grade did not influence early response, TTP, or survival. The survival rate was significantly higher in patients who achieved CR or PR than in those that assessed as SD or PD, or DO (P < 0.0001, each).ConclusionsHCV antibody positivity may be a significant pretreatment predictor of early response, TTP, and survival of patients with advanced HCC treated with 5-FU/IFN. CR or PR as the early response to the combination therapy might indicate a more favorable prognosis in patients with advanced HCC. PVTT grade did not seem to influence the efficacy of combination therapy.


Hepatology Research | 2009

FDG positron emission tomography/computed tomography for the detection of extrahepatic metastases from hepatocellular carcinoma

Tomokazu Kawaoka; Shintaro Takaki; Kiminori Uka; Takahiro Azakami; Hiromi Saneto; Soo Cheol Jeong; Yoshiiku Kawakami; Shoichi Takahashi; Naoyuki Toyota; Katsuhide Ito; Yutaka Hirokawa; Kazuaki Chayama

Aims:  To compare the efficacy of positron emission tomography (PET) computed tomography (CT), multi‐detector helical computed tomography (MDCT) and bone scintigraphy for the detection of extrahepatic metastases in patients with hepatocellular carcinoma (HCC).


Journal of Gastroenterology | 2008

Clinicopathological features of elderly patients with hepatitis C virus-related hepatocellular carcinoma

Daiki Miki; Kiminori Uka; Hiromi Saneto; Tomokazu Kawaoka; Takahiro Azakami; Shintaro Takaki; Soo Cheol Jeong; Michio Imamura; Yoshiiku Kawakami; Shoichi Takahashi; Toshiyuki Itamoto; Toshimasa Asahara; Koji Arihiro; Kazuaki Chayama

BackgroundIt is well known that the incidence of hepatocellular carcinoma (HCC) in patients with hepatitis C virus (HCV) correlates with progression of liver fibrosis. However, there is little information on the impact of aging on hepatocarcinogenesis. The aim of this study was to elucidate the clinicopathological features of elderly patients with HCV-related HCC.MethodsThe study subjects were 693 consecutive patients newly diagnosed with HCC with anti-HCV. First, we divided them into a younger group (<70 years) and an elderly group (≥70 years) and compared clinicopathological features between the two groups. Next, we selected pure HCV-related HCC patients by excluding the patients with other probable factors for hepatocarcinogenesis (anti-HBc, interferon therapy, and alcohol) and compared the two groups again.ResultsHigher platelet count, lower male/female ratio, lower rate of habitual alcohol consumption, and better Child-Pugh class were recognized in the elderly group thant the younger group, statistically. In 133 cases of hepatic resection, fibrosis stage was lower in the elderly than the younger group. After selection of pure HCV-related HCC patients, in a stepwise multi variate analysis, male sex and platelet count <10 × 104/mm3 were significant variables associated with age <70. Regarding the latency period to HCC development, the patients who received a blood transfusion at an older age developed HCC sooner despite their lower grade of fibrosis.ConclusionsThe elderly patients developed HCC more often, despite their lower grade of fibrosis, compared with the younger patients. In addition to fibrosis, aging could be a factor affecting HCV-related hepatocarcinogenesis.


Liver International | 2007

Similar effects of recombinant interferon-α-2b and natural interferon-α when combined with intra-arterial 5-fluorouracil for the treatment of advanced hepatocellular carcinoma

Kiminori Uka; Shintaro Takaki; Daiki Miki; Soo Cheol Jeong; Akira Hiramatsu; Hideaki Kodama; Hiroo Shirakawa; Yoshiiku Kawakami; Shoichi Takahashi; Naoyuki Toyota; Katsuhide Ito; Kazuaki Chayama

Aim: Intra‐arterial 5‐fluorouracil (5‐FU) plus interferon (IFN) combination therapy is effective against advanced hepatocellular carcinoma (HCC) with portal vein tumour thrombosis. In this study, we compared the efficiency and safety of recombinant IFN‐α‐2b with natural IFN‐α as components of the combination therapy.


Oncology | 2007

Efficacy of Percutaneous Cementoplasty for Bone Metastasis from Hepatocellular Carcinoma

Hideaki Kodama; Kiminori Uka; Shintaro Takaki; Nami Mori; Koji Waki; Soo Cheol Jeong; Yoshiiku Kawakami; Hiroo Shirakawa; Shoichi Takahashi; Naoyuki Toyota; Katsuhide Ito; Kazuaki Chayama

Objective: To assess the efficacy of percutaneous cementoplasty for painful bone metastasis from hepatocellular carcinoma (HCC). Methods: Cementoplasty was performed for 22 metastatic bone tumors in 13 patients. All patients had intractable pain and were diagnosed as metastatic bone tumor from HCC. The ostyneedle was inserted in the center of the site of bone metastasis under CT guidance. VAS score, Tokuhashi score and Frankel score were used for assessment of the efficacy of cementoplasty. We also assessed the response to treatment, adverse events and prognosis. Results: Only the VAS score, but not Tokuhashi and Frankel scores, improved after cementoplasty. Cementoplasty for painful bone metastasis provided relief of severe pain but did not improve prognosis, neurological function or survival. Eleven of 13 (85%) patients showed CR or PR and the mean pain-free period was 5 months, including a 10-month pain-free period in one case. No major complications were encountered. Conclusions: Percutaneous cementoplasty can provide pain relief and improvement of quality of life, though without survival benefits, for HCC patients with painful bone metastasis.


Oncology | 2008

Combination therapy of oral fluoropyrimidine anticancer drug S-1 and interferon alpha for HCC patients with extrahepatic metastases.

Kiminori Uka; Nami Mori; Shintaro Takaki; Yoshiiku Kawakami; Takahiro Azakami; Tomokazu Kawaoka; Soo Cheol Jeong; Shoichi Takahashi; Kazuaki Chayama

Purpose: There is no standard treatment for hepatocellular carcinoma (HCC) patients with extrahepatic metastases. We assessed the efficiency and safety of the oral fluoropyrimidine anticancer drug S-1 combined with interferon alpha (IFN-α) for HCC patients with extrahepatic metastases. Methods: Twenty-nine HCC patients with extrahepatic metastases received S-1/IFN. One cycle of combination therapy represented 2 weeks followed by 2–4 weeks of rest. In each cycle, S-1 was administrated orally at 80–120 mg (depending on body surface area) every day and IFN-α intramuscularly at 5 million units thrice weekly. Results: The overall response of 29 patients was complete response (CR) in 4 (14%), partial response (PR) in 1, stable disease in 4, progressive disease in 12, and dropout in 8 patients. Objective response (CR + PR) was 17%. The time to progression and survival rate were significantly higher in patients with lung metastases (n = 19) than in those with painful bone metastases (n = 7; p = 0.0058 and 0.0015). With regard to NCI-CTC grade 3 adverse reactions, 3 (10%), 3 (10%) and 2 (7%) patients developed anorexia, leukopenia, and neutropenia, respectively. No grade 4 adverse reaction or toxicity-related death occurred. Conclusion: S-1/IFN is a potentially safe and suitable combination therapy for HCC patients with extrahepatic metastases, especially those with lung metastases.


Journal of Gastroenterology and Hepatology | 2008

Etiology and outcome of acute liver failure: Retrospective analysis of 50 patients treated at a single center

Akira Hiramatsu; Shoichi Takahashi; Takahiro Azakami; Yoshio Katamura; Tomokazu Kawaoka; Kiminori Uka; Keitaro Yamashina; Shintaro Takaki; Hideaki Kodama; Soo Cheol Jeong; Michio Imamura; Yoshiiku Kawakami; Kazuaki Chayama

Background and Aim:  Acute liver failure (ALF) remains a devastating disease carrying considerable mortality. Since deceased donor liver transplantation is rarely performed in Japan, the artificial liver support system (ALS) and living donor liver transplantation (LDLT) are the main modalities used for treatment of ALF. The aim of this study was to analyze the outcome of ALF patients and to evaluate therapies for ALF according to etiology.


Journal of Gastroenterology and Hepatology | 2009

Dose comparison study of pegylated interferon-α-2b plus ribavirin in naïve Japanese patients with hepatitis C virus genotype 2: A randomized clinical trial

Tomokazu Kawaoka; Yoshiiku Kawakami; Keiji Tsuji; Hiroyuki Ito; Mikiya Kitamoto; Shiomi Aimitsu; Hiroiku Kawakami; Soo Cheol Jeong; Michio Imamura; Shoichi Takahashi; Kazuaki Chayama

Background and Aim:  To compare the efficacy and safety of pegylated interferon (PEG‐I) at 1 and 1.5 µg/kg, and in combination with ribavirin (RBV) for 24 weeks in naïve Japanese patients infected with hepatitis C virus genotype 2.


Journal of Gastroenterology | 2008

Beneficial effects of living-donor liver transplantation on esophageal varices

Tomokazu Kawaoka; Shoichi Takahashi; Takahiro Azakami; Hiromi Saneto; Shintaro Takaki; Soo Cheol Jeong; Toshimasa Asahara; Katsuhide Ito; Kazuaki Chayama

BackgroundLiver transplantation (LT) is known to improve bleeding esophageal varices (EVs) and portal hypertension. However, many issues related to EVs after LT remain unresolved, such as whether LT reduces blood supply to EVs, improves the diameter of unruptured EVs, or improves or worsens EVs. The aim of this retrospective study was to determine the effects of living-donor liver transplantation (LDLT) in patients with hepatic failure on EVs and inflow vessels to EVs and the factors associated with deterioration of EVs after LDLT.MethodsThe study subjects were 35 patients with cirrhosis who underwent LDLT. Endoscopy and multidetector helical computed tomography (MDCT) were performed before and after LDLT. The diameter of the inflow vessel of EVs was measured by MDCT before and after LDLT, together with the LDLT-related reduction rate of the diameter of the gastric vein (RRGV).ResultsEndoscopic examination showed improvement of EVs in 30 of 35 (86%) patients. RRGV improved in 17/35 (49%) patients, did not change in 13/35 (37%), and deteriorated in 5/35 (14%). The cause of RRGV deterioration seemed to be either the complication of portal vein or graft failure. In patients examined endoscopically at >1 year after LDLT, improvement of EVs was associated with significant changes in the rate of reduction of the major inflow vessel diameter and Child-Pugh score, compared with those who showed no improvement.ConclusionsLDLT results in improvement of EVs. EVs improved in 86% of the patients. Measurement of RRGV with MDCT is a good tool for prediction of EV improvement after LDLT.


World Journal of Gastroenterology | 2007

Clinical features and prognosis of patients with extrahepatic metastases from hepatocellular carcinoma

Kiminori Uka; Shintaro Takaki; Hiroo Shirakawa; Soo Cheol Jeong; Keitaro Yamashina; Akira Hiramatsu; Hideaki Kodama; Shoichi Takahashi; Kazuaki Chayama

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