1.Enhanced radiofrequency ablation for recurrent hepatocellular carcinoma post-transarterial chemoembolization: a prospective study utilizing twin internally cooled-perfusion electrodes
Sungjun HWANG ; Jae Hyun KIM ; Sae-Jin PARK ; Su Jong YU ; Yoon Jun KIM ; Jung-Hwan YOON ; Jeong Min LEE
Journal of Liver Cancer 2025;25(1):91-98
Background:
s/Aims: Radiofrequency ablation (RFA) is widely employed for managing recurrent hepatocellular carcinoma (HCC) following transarterial chemoembolization (TACE). However, local tumor progression (LTP) after treatment remains a significant challenge. This study evaluates the efficacy of saline-perfused bipolar RFA using twin internally cooled-perfusion (TICP) electrodes in managing recurrent HCC post-TACE.
Methods:
Between September 2017 and January 2019, 100 patients with 105 nodules (mean diameter, 1.6±0.5 cm) were prospectively enrolled. Bipolar RFA with TICP electrodes was performed under ultrasound-computed tomography/magnetic resonance fusion guidance. The primary outcome was the 2-year cumulative incidence of LTP.
Results:
The technical success and technique efficacy rates were 100% and 97%, respectively. During a median follow-up period of 34.0 months (range, 3-41), the estimated LTP rates were 13.3% at 1 year and 17.7% at 2 years. Progression-free survival rates were 37.8% and 27.7% at 1 year and 2 years, respectively.
Conclusions
Saline-perfused bipolar RFA using TICP electrodes demonstrates promising results for recurrent HCC after TACE, achieving high technical success and effective local tumor control rates.
2.Enhanced radiofrequency ablation for recurrent hepatocellular carcinoma post-transarterial chemoembolization: a prospective study utilizing twin internally cooled-perfusion electrodes
Sungjun HWANG ; Jae Hyun KIM ; Sae-Jin PARK ; Su Jong YU ; Yoon Jun KIM ; Jung-Hwan YOON ; Jeong Min LEE
Journal of Liver Cancer 2025;25(1):91-98
Background:
s/Aims: Radiofrequency ablation (RFA) is widely employed for managing recurrent hepatocellular carcinoma (HCC) following transarterial chemoembolization (TACE). However, local tumor progression (LTP) after treatment remains a significant challenge. This study evaluates the efficacy of saline-perfused bipolar RFA using twin internally cooled-perfusion (TICP) electrodes in managing recurrent HCC post-TACE.
Methods:
Between September 2017 and January 2019, 100 patients with 105 nodules (mean diameter, 1.6±0.5 cm) were prospectively enrolled. Bipolar RFA with TICP electrodes was performed under ultrasound-computed tomography/magnetic resonance fusion guidance. The primary outcome was the 2-year cumulative incidence of LTP.
Results:
The technical success and technique efficacy rates were 100% and 97%, respectively. During a median follow-up period of 34.0 months (range, 3-41), the estimated LTP rates were 13.3% at 1 year and 17.7% at 2 years. Progression-free survival rates were 37.8% and 27.7% at 1 year and 2 years, respectively.
Conclusions
Saline-perfused bipolar RFA using TICP electrodes demonstrates promising results for recurrent HCC after TACE, achieving high technical success and effective local tumor control rates.
3.Enhanced radiofrequency ablation for recurrent hepatocellular carcinoma post-transarterial chemoembolization: a prospective study utilizing twin internally cooled-perfusion electrodes
Sungjun HWANG ; Jae Hyun KIM ; Sae-Jin PARK ; Su Jong YU ; Yoon Jun KIM ; Jung-Hwan YOON ; Jeong Min LEE
Journal of Liver Cancer 2025;25(1):91-98
Background:
s/Aims: Radiofrequency ablation (RFA) is widely employed for managing recurrent hepatocellular carcinoma (HCC) following transarterial chemoembolization (TACE). However, local tumor progression (LTP) after treatment remains a significant challenge. This study evaluates the efficacy of saline-perfused bipolar RFA using twin internally cooled-perfusion (TICP) electrodes in managing recurrent HCC post-TACE.
Methods:
Between September 2017 and January 2019, 100 patients with 105 nodules (mean diameter, 1.6±0.5 cm) were prospectively enrolled. Bipolar RFA with TICP electrodes was performed under ultrasound-computed tomography/magnetic resonance fusion guidance. The primary outcome was the 2-year cumulative incidence of LTP.
Results:
The technical success and technique efficacy rates were 100% and 97%, respectively. During a median follow-up period of 34.0 months (range, 3-41), the estimated LTP rates were 13.3% at 1 year and 17.7% at 2 years. Progression-free survival rates were 37.8% and 27.7% at 1 year and 2 years, respectively.
Conclusions
Saline-perfused bipolar RFA using TICP electrodes demonstrates promising results for recurrent HCC after TACE, achieving high technical success and effective local tumor control rates.
4.Transient Perivascular Inflammation of the Carotid Artery Syndrome: A Case Report with Diagnostic Insights from Vessel Wall Imaging and Contrast-enhanced Ultrasonography
Dongje LEE ; Yoona KO ; Sang Min PAIK ; Jeong Min CHA ; Sung Hyun BAIK ; Jihoon KANG ; Jun Yup KIM
Journal of the Korean Neurological Association 2024;42(4):357-360
Transient perivascular inflammation of the carotid artery (TIPIC) syndrome is a rare disease accompanied by acute neck pain and specific pathologic changes in the carotid artery and surrounding tissue. Here, we present a case diagnosed with typical imaging features, including extensive enhancement with luminal narrowing on vessel wall imaging and the presence of microbubbles on contrast-enhanced ultrasonography. These findings provide valuable insights into the pathophysiology of TIPIC syndrome and importance of imaging modalities for early detection and management.
5.Transient Perivascular Inflammation of the Carotid Artery Syndrome: A Case Report with Diagnostic Insights from Vessel Wall Imaging and Contrast-enhanced Ultrasonography
Dongje LEE ; Yoona KO ; Sang Min PAIK ; Jeong Min CHA ; Sung Hyun BAIK ; Jihoon KANG ; Jun Yup KIM
Journal of the Korean Neurological Association 2024;42(4):357-360
Transient perivascular inflammation of the carotid artery (TIPIC) syndrome is a rare disease accompanied by acute neck pain and specific pathologic changes in the carotid artery and surrounding tissue. Here, we present a case diagnosed with typical imaging features, including extensive enhancement with luminal narrowing on vessel wall imaging and the presence of microbubbles on contrast-enhanced ultrasonography. These findings provide valuable insights into the pathophysiology of TIPIC syndrome and importance of imaging modalities for early detection and management.
6.Transient Perivascular Inflammation of the Carotid Artery Syndrome: A Case Report with Diagnostic Insights from Vessel Wall Imaging and Contrast-enhanced Ultrasonography
Dongje LEE ; Yoona KO ; Sang Min PAIK ; Jeong Min CHA ; Sung Hyun BAIK ; Jihoon KANG ; Jun Yup KIM
Journal of the Korean Neurological Association 2024;42(4):357-360
Transient perivascular inflammation of the carotid artery (TIPIC) syndrome is a rare disease accompanied by acute neck pain and specific pathologic changes in the carotid artery and surrounding tissue. Here, we present a case diagnosed with typical imaging features, including extensive enhancement with luminal narrowing on vessel wall imaging and the presence of microbubbles on contrast-enhanced ultrasonography. These findings provide valuable insights into the pathophysiology of TIPIC syndrome and importance of imaging modalities for early detection and management.
7.Surgical correction of medial canthal widening associated with aging: two case reports
Youngwoong CHOI ; Jeong Min JI ; Choong Hyeon KIM
Archives of Aesthetic Plastic Surgery 2024;30(4):141-145
Medial canthal widening due to aging is a frequent concern among elderly individuals, often resulting in cosmetic dissatisfaction. This condition commonly involves caruncle exposure and elongation of the medial canthus, sometimes requiring surgical intervention. While medial epicanthoplasty is commonly used to address medial canthal deformities, age-related changes call for a modified approach to optimize aesthetic results. We present two cases of elderly patients whose medial canthal widening was corrected using a modified V-Y advancement flap combined with medial canthal tendon tightening. This technique involves elevating a V-flap and suturing the pretarsal orbicularis oculi muscle and medial canthal tendon to restore medial canthal contour. In one case, an 85-year-old man with unilateral caruncle exposure experienced marked cosmetic improvement post-surgery. In the second case, a 71-year-old woman with bilateral medial canthal widening also reported significant improvement. Both patients had no complications and expressed satisfaction with their postoperative appearance. This surgical approach effectively reduced caruncle exposure and enhanced eye shape with no recurrence or wound healing problems. Medial canthal widening from aging can be successfully treated with a V-Y advancement flap and medial canthal tendon tightening, offering elderly patients a dependable solution with favorable cosmetic results.
8.Surgical management of severe cherubism persisting into early adulthood: a case report and literature review
Youngwoong CHOI ; Jeong Min JI ; Choong Hyeon KIM ; Ki Pyo SUNG
Archives of Craniofacial Surgery 2024;25(1):38-43
Cherubism is a rare fibro-osseous condition characterized by bilateral expansion of the mandible and maxilla. Due to its rarity, treatment guidelines for cherubism have not been clearly established. Observation without surgical intervention is typically recommended, as cherubism often regresses spontaneously after puberty. However, a surgical intervention may be necessary if aggressive lesions lead to severe complications. In this report, we present a case involving surgical management of cherubism that did not spontaneously regress until early adulthood. An 18-year-old man was diagnosed with cherubism, presenting characteristic upward-looking eyes and a swollen face. He strongly desired surgical management. Gross contouring of the mandible was performed using an osteotome. Subsequently, delicate contouring was performed by bone burring and curettage. The remaining multiple locular bony defects were filled with demineralized bone matrix. No major complications, including infection and hematoma, occurred during the 8-month follow-up period. The facial contour remained stable without the aggravation of cherubism. The patient was satisfied with the cosmetic results. Considering that cherubism is a rare disease globally, with few reported cases in Korea, and that treatment guidelines are not clearly established, we anticipate that the results of this case will contribute to the development of future protocols for treating cherubism.
9.Sex Differences in Chronic Cough Epidemiology: The Korean Cough Study Group
Jiyeon KANG ; Woo Jung SEO ; Jieun KANG ; Jung Gon KIM ; Sung Jun CHUNG ; Hyung Koo KANG ; Sung-Soon LEE ; Tai Joon AN ; Hyonsoo JOO ; Hyun LEE ; Youlim KIM ; Ina JEONG ; Jinkyeong PARK ; Sung-Kyoung KIM ; Jong-Wook SHIN ; Chin Kook RHEE ; Yee Hyung KIM ; Kyung Hoon MIN ; Ji-Yong MOON ; Deog Kyeom KIM ; Seung Hun JANG ; Kwang Ha YOO ; Jin Woo KIM ; Hyoung Kyu YOON ; Hyeon-Kyoung KOO
Journal of Korean Medical Science 2024;39(38):e273-
Background:
Chronic cough is a common symptom encountered by healthcare practitioners.The global prevalence of chronic cough is 9.6%, with a female predominance. The aim of our study is to reveal the sex differences in prevalence and severity of chronic cough in South Korea, stratified by age and etiology.
Methods:
This study included adult patients with chronic cough who were recruited from 19 respiratory centers in South Korea. Patients completed the cough numeric rating scale (NRS) and COugh Assessment Test (COAT) questionnaire to assess the severity and multidimensional impact of cough.
Results:
Among the 625 patients, 419 (67.0%) were females, with a male-to-female ratio of 1:2.03. The mean age was 49.4 years, and the median duration of cough was 12 weeks. The mean NRS and COAT scores were 5.5 ± 1.8 and 9.5 ± 3.6, respectively. Female patients were older (45.3 ± 15.4 vs. 51.6 ± 15.2, P < 0.001) and more likely to have asthma/cough variant asthma (CVA) (26.7% vs. 40.8%, P = 0.001) than male patients. There was no difference in the duration or severity of cough between sexes, regardless of the cause. The male-tofemale ratio was lower for upper airway cough syndrome (UACS), asthma/CVA, and gastroesophageal reflux disease (GERD), but not for eosinophilic bronchitis (EB) or unexplained cough. The mean age of female patients was higher in UACS and asthma/CVA, but not in EB, GERD, or unexplained cough. The majority (24.2%) fell within the age category of 50s. The proportion of females with cough increased with age, with a significant rise in the 50s, 60s, and 70–89 age groups. The severity of cough decreased in the 50s, 60s, and 70–89 age groups, with no significant sex differences within the same age group.
Conclusion
The sex disparities in prevalence and severity of cough varied significantly depending on the age category and etiology. Understanding the specific sex-based difference could enhance comprehension of cough-related pathophysiology and treatment strategies.
10.Assessment of real-time US-CT/MR-guided percutaneous gold fiducial marker implementation in malignant hepatic tumors for stereotactic body radiation therapy
Sungjun HWANG ; Seok-Joo CHUN ; Eui Kyu CHIE ; Jeong Min LEE
Journal of Liver Cancer 2024;24(2):263-273
Background:
s/Aims: This study explored the initial institutional experience of using gold fiducial markers for stereotactic body radiotherapy (SBRT) in treating malignant hepatic tumors using real-time ultrasound-computed tomography (CT)/magnetic resonance (MR) imaging fusion-guided percutaneous placement.
Methods:
From May 2021 to August 2023, 19 patients with 25 liver tumors that were invisible on pre-contrast CT received fiducial markers following these guidelines. Postprocedural scans were used to confirm their placement. We assessed technical and clinical success rates and monitored complications. The implantation of fiducial markers facilitating adequate treatment prior to SBRT, which was achieved in 96% of the cases (24 of 25 tumors), was considered technical success. Clinical success was the successful completion of SBRT without evidence of marker displacement and was achieved in 88% of cases (22 of 25 tumors). Complications included one major subcapsular hematoma and marker migration into the right atrium in two cases, which prevented SBRT.
Results:
Among the treated tumors, 20 of 24 (83.3%) showed a complete response, three of 24 (12.5%) remained stable, and one of 24 (4.2%) progressed during an average 11.7-month follow-up (range, 2-32 months).
Conclusions
This study confirms that percutaneous gold fiducial marker placement using real-time CT/MR guidance is effective and safe for SBRT in hepatic tumors, but warns of marker migration risks, especially near the hepatic veins and in subcapsular locations. Using fewer markers than traditionally recommended-typically two per patient, the outcomes were still satisfactory, particularly given the increased risk of migration when markers were placed near major hepatic veins.

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