Seong Kyun Na

Prof. Dr. Seong Kyun Na

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Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 October 2025 in Gut and Liver
Verified
Journal Article
Open access
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JYJiwon Yang
Jiwon Yang
YKYe Rim Kim
Ye Rim Kim
SNSeong Kyun Na
Seong Kyun Na
SKSeon-Ok Kim
Seon-Ok Kim
JAJihyun An
Jihyun An
JSJu Hyun Shim
Ju Hyun Shim
Jiwon Yang, Ye Rim Kim, Seong Kyun Na, Seonok Kim, Jihyun An, Ju Hyun Shim. Gut and Liver -0001;0:. https://doi.org/10.5009/gnl250275

5 December 2022 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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SHSeul Ki Han
Seul Ki Han
SKSeong Hee Kang
Seong Hee Kang
YKYoung Don Kim
Young Don Kim
SNSeong Kyun Na
Seong Kyun Na
TKTaeHyung Kim
TaeHyung Kim
SBSoon-Koo Baik
Soon-Koo Baik
Background/Aims: The management of hepatic hydrothorax (HH) remains a challenging clinical scenario with suboptimal options. We investigated the effect and safety of pigtail catheter drainage compared to intermittent thoracentesis. Methods: This multicenter, retrospective study included 164 cirrhotic patients with recurrent pleural effusion from March 2012 to June 2017. Patients with neoplasms, cardiopulmonary disease, and infectious conditions were excluded. We compared the clinical outcomes of pigtail catheter drainage versus thoracentesis for variables including complications related to procedures, overall survival, and re-admission rates. Results: A total of 164 patients were divided into pigtail catheter (n = 115) and thoracentesis (n = 49) groups. During the follow-up period of 6.93 months after discharge, 98 patients died (pigtail; n = 47 vs. thoracentesis; n = 51). The overall survival (p = 0.61) and 30-day mortality (p = 0.77) rates were similar between the pigtail catheter and thoracentesis groups. Only MELD scores were associated with overall survival (adjusted HR, 1.08; p < 0.01) in patients with HH. Spontaneous pleurodesis occurred in 59 patients (51.3%) in the pigtail catheter group. Re-admission rates did not differ between the pigtail catheter and thoracentesis groups (13.2% vs 19.6% p = 0.7). A total of five complications occurred, including four total cases of bleeding (one patient in the pigtail catheter group and three in the thoracentesis group) and one case of empyema in the pigtail catheter group. Conclusions: Pigtail catheter drainage is not inferior to that of intermittent thoracentesis for the management of HH, proving it may be an effective and safe clinical option.

1 March 2025 in Radiology
Verified
Journal Article
Closed access
JAJihyun An
Jihyun An
RPRohee Park
Rohee Park
EKEuichang Kim
Euichang Kim
SNSeong Kyun Na
Seong Kyun Na
HKHa Il Kim
Ha Il Kim
JSJu Hyun Shim
Ju Hyun Shim
Liver Imaging Reporting and Data System criteria demonstrated high diagnostic accuracy for diagnosing hepatocellular carcinoma using CT and MRI in patients with noncirrhotic chronic hepatitis C.

30 September 2022 in Journal of Liver Cancer
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Journal Article
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SNSeong Kyun Na
Seong Kyun Na
Fibrolamellar hepatocellular carcinoma (FLHCC) is a rare malignant hepatic cancer with characteristics that differ from those of typical hepatocellular carcinoma (HCC). Unlike conventional HCC, FLHCC is common in young patients without any underlying liver disease and is known to be associated with a unique gene mutation. This cancer type is rare in Asia, with only a few cases being reported in Korea. We report a case of FLHCC in a young woman that successfully underwent surgical resection. The efficacy of alternative treatments, such as transarterial chemoembolization or systemic chemotherapies, has not yet been established. To conclude, early diagnosis and appropriate surgical resection are important for the treatment of FLHCC.

14 July 2024 in Medicina
Verified
Journal Article
Open access
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YPYewan Park
Yewan Park
SNSeong Kyun Na
Seong Kyun Na
JYJae Hyun Yoon
Jae Hyun Yoon
Sung-Eun KimSung-Eun Kim
Sung-Eun Kim
JPJi Won Park
Ji Won Park
JKJeong Han Kim
Jeong Han Kim
Background and Objectives: Chronic hepatitis C (CHC) can be cured with direct-acting antiviral (DAA) therapy. In Korea, sofosbuvir (SOF) and ledipasvir (LDV)/SOF were launched in 2016. Patients who achieve a sustained virologic response (SVR) following DAA treatment are predicted to have a favorable prognosis. Nevertheless, little is known regarding the prognosis of Korean CHC patients who receive SOF-based treatment and achieve SVR. Therefore, the purpose of this study was to look into the long-term outcomes for these patients. Materials and Methods: This was a prospective, multicenter observational study. CHC patients were enrolled who, following SOF or LDV/SOF treatment, had achieved SVR. The last day for follow-up was December 2023. The primary endpoint was HCC occurrence, which was checked at least once per year. Results: A total of 516 patients were included in this analysis, with a median follow-up duration of 39.0 months. Among them, 231 were male patients (44.8%), with a median age of 62.0 years. Genotypes were 1 (90, 17.4%), 2 (423, 82.0%), and 3 (3, 0.6%). The combination of SOF plus ribavirin was the most common treatment (394, 76.4%). In total, 160 patients were cirrhotic (31.0%), and the mean Child–Pugh score was 5.1. Within a maximum of 7 years, 21 patients (4.1%) developed HCC. Patients with HCC were older (69 vs. 61 years, p = 0.013) and had a higher cirrhosis incidence (81.0 vs. 28.9%, p < 0.001), higher AFP (6.0 vs. 3.3, p = 0.003) and higher APRI (0.8 vs. 0.5, p = 0.005). Age over 65 (p = 0.016) and cirrhosis (p = 0.005) were found to be significant risk factors for HCC by Cox regression analysis. Conclusions: Patients who achieved SVR with SOF-based treatment had a relatively favorable prognosis. However, the risk of HCC was not eliminated, especially in older and cirrhotic patients. Therefore, routine follow-up, surveillance, and early treatment are required.

4 September 2025 in Medicina
Verified
Journal Article
Open access
PDF file
JKJung Hee Kim
Jung Hee Kim
JYJae Hyun Yoon
Jae Hyun Yoon
Sung-Eun KimSung-Eun Kim
Sung-Eun Kim
JPJi Won Park
Ji Won Park
YPYewan Park
Yewan Park
JKJeong Han Kim
Jeong Han Kim
Background and Aims: Glecaprevir/pibrentasvir achieves sustained virologic response (SVR) rates above 95% in chronic hepatitis C (CHC). Nevertheless, the residual risk of hepatocellular carcinoma (HCC) after SVR, especially in patients with advanced liver disease, has not been fully defined. We prospectively evaluated longitudinal changes in liver function and fibrosis and sought predictors of post-SVR HCC in a real-world multicenter cohort. Methods: A total of 395 CHC patients who attained SVR with glecaprevir/pibrentasvir were followed prospectively. Liver function tests, noninvasive fibrosis indices, and clinical outcomes were recorded at predefined intervals. Cox proportional hazards regression identified factors associated with incident HCC. Results: Over a median follow-up of 31.1 months, HCC occurred in 16 patients (4.1%). From univariate analysis, baseline FIB-4 > 3.25, APRI > 1.5, MELD ≥ 10, Child–Pugh score ≥ 6, and clinically significant portal hypertension were associated with HCC. Multivariate analysis retained FIB-4 > 3.25 (p = 0.003) and MELD ≥ 10 (p = 0.032) as independent predictors. Cumulative incidence rose stepwise with the number of risk factors. Conclusions: Despite a virologic cure, patients with advanced fibrosis or impaired liver function remain susceptible to HCC. Risk stratification using FIB-4 and MELD and continued surveillance are therefore warranted.