1.Management of Simple Hepatic Cyst: Is It Time to Change Our Paradigm to Early Non-Surgical Intervention?
Raed Mohammed ALGHAZAL ; Dong-Wan SEO
Korean Journal of Pancreas and Biliary Tract 2025;30(1):1-9
Hepatic simple cysts are common benign liver lesions frequently encountered in clinical practice. While the majority are asymptomatic and detected incidentally during imaging, approximately 5% of patients may experience symptoms, often related to the size and location of the cysts or the development of complications. Management of symptomatic cysts may involve percutaneous or endoscopic ultrasound (EUS)-guided aspiration with sclerotherapy, or surgical intervention, aimed at alleviating symptoms by reducing cystic volume. Solely aspirating cystic fluid tends to lead to complete cyst recurrence. Given the high recurrence rate, various management strategies have been proposed varying primarily in the choice of sclerosing agent (e.g., ethanol, tetracycline, polidocanol), infused volume, and retention time. Generally, these studies indicate good symptom improvement, reduced cyst volume, and a favorable safety profile. This review aims to revise the management approach for simple hepatic cysts by introducing two key changes based on recent practices. First, it advocates for a proactive management strategy, suggesting that intervention should not be delayed until cysts become symptomatic. Untreated growing cysts can lead to complications, making noninvasive management more challenging and increasing the likelihood of surgical intervention. Second, the review supports the use of sclerotherapy–either EUS-guided or percutaneous–as the first-line therapy for simple hepatic cysts, based on evidence demonstrating its effectiveness and safety. By addressing these changes, the review seeks to enhance current management strategies for simple hepatic cysts.
2.Comparison of intraoperative neurophysiological monitoring between propofol and remimazolam during total intravenous anesthesia in the cervical spine surgery: a prospective, double-blind, randomized controlled trial
Myoung Hwa KIM ; Jinyoung PARK ; Yoon Ghil PARK ; Yong Eun CHO ; Dawoon KIM ; Dong Jun LEE ; Kyu Wan KWAK ; Jongyun LEE ; Dong Woo HAN
Korean Journal of Anesthesiology 2025;78(1):16-29
Background:
Although total intravenous anesthesia (TIVA) with propofol and remifentanil is frequently used to optimize intraoperative neurophysiological monitoring (IONM), the exact effect of remimazolam on IONM remains unknown. Here, we compared the effects of propofol and remimazolam along with remifentanil on IONM during TIVA.
Methods:
In this prospective, double-blind, randomized controlled trial, 64 patients requiring IONM during cervical spine surgery were administered either propofol (Group P) or remimazolam (Group R). The preoperative latencies of the somatosensory-evoked potentials (SEP; N20 for the median nerve and P37 for the tibial nerve) were measured. SEP latencies and amplitudes and motor-evoked potential (MEP) amplitudes were measured 30 min after anesthetic induction (T1), 30 min after surgical incision (T2), after laminectomy or discectomy (T3), immediately after plate insertion or pedicle screw fixation (T4), and before surgical wound closure (T5). The primary outcome was the between-group difference in the N20 latency changes measured at T1 and preoperatively.
Results:
The change in SEP latencies including N20 and P37 at T1 compared with preoperative time was not significantly different between Groups P and R. Except for the amplitude of the right abductor brevis, there was no significant group-by-time interaction effect for intraoperative MEP amplitudes or SEP latencies and amplitudes.
Conclusions
TIVA with remimazolam and remifentanil for cervical spine surgery yielded stable IONM, comparable to those observed with conventional TIVA with propofol and remifentanil. Further clinical trials are needed in other surgical contexts and with more diverse patient populations to determine the effects of remimazolam on IONM.
3.Combination of intrarectal heated lidocaine gel and periprostatic nerve block for pain control during transrectal ultrasound-guided prostate biopsy: A prospective randomized trial
Jung Im KIM ; Dong Wan SOHN ; Bong Hee PARK
Investigative and Clinical Urology 2025;66(2):130-136
Purpose:
To investigate the role of combined periprostatic nerve block (PNB) and intrarectal local anesthesia with heated lidocaine gel (ILAHL) in reducing pain during transrectal ultrasound (TRUS)-guided prostate biopsy, compared with PNB alone.
Materials and Methods:
We performed a prospective randomized trial with 140 participants who underwent systematic TRUS-guid ed, 12-core prostate biopsy from July 2021 to June 2022. These participants were divided into two groups. Before prostate biopsy, group 1 (n=70) received PNB and group 2 (n=70) received PNB combined intrarectal local anesthesia with 20 mL of heated (40ºC) 2% lidocaine gel. The primary outcome was pain score on a 0–10 visual analogue scale (VAS) at four time points (VAS A: during local anesthesia procedure, VAS B: during probe insertion, VAS C: during biopsy procedure, VAS D: 30 minutes after biopsy). The secondary outcome included adverse events during and after the procedure.
Results:
Mean pain scores were significantly lower in group 2 than in group 1 at VAS A (2.53 vs. 1.60, p=0.001) and VAS B (2.47 vs.1.49, p<0.001). The mean VAS C pain score in group 2 was significantly less than in group 1 (3.07 vs. 2.20, p=0.001), while there was no significant difference in the mean VAS D pain score between two groups (1.06 vs. 0.89, p=0.318). There were no significant differences in the occurrence of complications in both groups.
Conclusions
The combination of PNB and ILAHL provides more effective pain control than PNB alone without increase of complication rates in patients undergoing TRUS-guided prostate biopsy.
4.The Effect of Enhanced Recovery after Surgery Protocol in Orthopedic Hip Surgery: A Systematic Review and Meta-Analysis
Dong Ha LEE ; Ji Wan KIM ; Chul-Ho KIM
Clinics in Orthopedic Surgery 2025;17(3):389-399
Background:
The Enhanced Recovery After Surgery (ERAS) protocol has garnered global attention for optimizing perioperative care. It holds significant potential for orthopedic hip surgery, especially in elderly patients requiring rehabilitation. However, largescale studies or meta-analyses specific to this field remain limited.
Methods:
A systematic search was performed using Medline (PubMed), Embase, and Cochrane Library databases for studies assessing the effects of the ERAS protocol in hip surgery up to August 13, 2024. A double-arm meta-analysis was designed to compare perioperative outcomes, including postoperative pain scores, transfusion rates, medical and surgical complications, and length of hospital stay, between ERAS and control groups.
Results:
Twenty-one studies were systematically reviewed, and 13 were included in the pooled analysis, comprising 1,004 patients in the ERAS group and 1,159 in the control group. Meta-analysis results demonstrated that the ERAS protocol significantly improved postoperative pain management, reduced blood transfusion requirements, decreased medical complications, and shortened hospital stays compared to standard protocols.
Conclusions
This meta-analysis supports the hypothesis that the ERAS protocol enhances perioperative outcomes in orthopedic hip surgery.
5.The Efficacy and Safety of Endoscopic Ultrasound-Guided Retroperitoneal Fluid Collection Drainage with Novel Electrocautery-Enhanced Lumen-Apposing Metal Stents (with Video)
Sung Hyun CHO ; Yoonchan LEE ; Tae Jun SONG ; Dongwook OH ; Dong-Wan SEO
Gut and Liver 2025;19(3):454-461
Background/Aims:
Various lumen-apposing metal stents (LAMS) have been used for the endoscopic ultrasound-guided transmural drainage (EUS-TD) of postoperative pancreatic fluid collections (POPFC) and peripancreatic fluid collections (PFC). In this study, we aimed to assess the efficacy and safety of novel electrocautery-enhanced LAMSs (Hot-Plumber with Z-EUS IT) with different inter-flange lengths (13 to 33 mm) for managing POPFC and PFC.
Methods:
We reviewed the interventional EUS database of Asan Medical Center to identify consecutive patients with POPFC or PFC who underwent EUS-TD with the novel LAMSs between April 2023 and December 2023. Technical success, clinical success, and adverse events were evaluated.
Results:
Ten patients (5 with POPFCs and 5 with PFCs) were included in the analysis. The technical and clinical success rates were 100% and 90%, respectively. The LAMS was placed using either the freehand technique (n=5) or the over-the-guide wire technique (n=5). One patient successfully underwent endoscopic necrosectomy for walled-off necrosis through a novel LAMS.Two patients experienced adverse events (one stent migration and one infection). The LAMS was removed in 7 out of 10 patients after resolution of the fluid collection at a median of 61 days (interquartile range, 31 to 69 days) post-LAMS placement.
Conclusions
EUS-TD using the novel LAMS for POPFC and PFC demonstrated high efficacy and an acceptable safety profile. This novel LAMS represents a viable option when selecting stents for EUS-guided drainage of the POPFC and PFC.
7.The Effect of Enhanced Recovery after Surgery Protocol in Orthopedic Hip Surgery: A Systematic Review and Meta-Analysis
Dong Ha LEE ; Ji Wan KIM ; Chul-Ho KIM
Clinics in Orthopedic Surgery 2025;17(3):389-399
Background:
The Enhanced Recovery After Surgery (ERAS) protocol has garnered global attention for optimizing perioperative care. It holds significant potential for orthopedic hip surgery, especially in elderly patients requiring rehabilitation. However, largescale studies or meta-analyses specific to this field remain limited.
Methods:
A systematic search was performed using Medline (PubMed), Embase, and Cochrane Library databases for studies assessing the effects of the ERAS protocol in hip surgery up to August 13, 2024. A double-arm meta-analysis was designed to compare perioperative outcomes, including postoperative pain scores, transfusion rates, medical and surgical complications, and length of hospital stay, between ERAS and control groups.
Results:
Twenty-one studies were systematically reviewed, and 13 were included in the pooled analysis, comprising 1,004 patients in the ERAS group and 1,159 in the control group. Meta-analysis results demonstrated that the ERAS protocol significantly improved postoperative pain management, reduced blood transfusion requirements, decreased medical complications, and shortened hospital stays compared to standard protocols.
Conclusions
This meta-analysis supports the hypothesis that the ERAS protocol enhances perioperative outcomes in orthopedic hip surgery.
8.The Efficacy and Safety of Endoscopic Ultrasound-Guided Retroperitoneal Fluid Collection Drainage with Novel Electrocautery-Enhanced Lumen-Apposing Metal Stents (with Video)
Sung Hyun CHO ; Yoonchan LEE ; Tae Jun SONG ; Dongwook OH ; Dong-Wan SEO
Gut and Liver 2025;19(3):454-461
Background/Aims:
Various lumen-apposing metal stents (LAMS) have been used for the endoscopic ultrasound-guided transmural drainage (EUS-TD) of postoperative pancreatic fluid collections (POPFC) and peripancreatic fluid collections (PFC). In this study, we aimed to assess the efficacy and safety of novel electrocautery-enhanced LAMSs (Hot-Plumber with Z-EUS IT) with different inter-flange lengths (13 to 33 mm) for managing POPFC and PFC.
Methods:
We reviewed the interventional EUS database of Asan Medical Center to identify consecutive patients with POPFC or PFC who underwent EUS-TD with the novel LAMSs between April 2023 and December 2023. Technical success, clinical success, and adverse events were evaluated.
Results:
Ten patients (5 with POPFCs and 5 with PFCs) were included in the analysis. The technical and clinical success rates were 100% and 90%, respectively. The LAMS was placed using either the freehand technique (n=5) or the over-the-guide wire technique (n=5). One patient successfully underwent endoscopic necrosectomy for walled-off necrosis through a novel LAMS.Two patients experienced adverse events (one stent migration and one infection). The LAMS was removed in 7 out of 10 patients after resolution of the fluid collection at a median of 61 days (interquartile range, 31 to 69 days) post-LAMS placement.
Conclusions
EUS-TD using the novel LAMS for POPFC and PFC demonstrated high efficacy and an acceptable safety profile. This novel LAMS represents a viable option when selecting stents for EUS-guided drainage of the POPFC and PFC.
9.The Efficacy and Safety of Endoscopic Ultrasound-Guided Retroperitoneal Fluid Collection Drainage with Novel Electrocautery-Enhanced Lumen-Apposing Metal Stents (with Video)
Sung Hyun CHO ; Yoonchan LEE ; Tae Jun SONG ; Dongwook OH ; Dong-Wan SEO
Gut and Liver 2025;19(3):454-461
Background/Aims:
Various lumen-apposing metal stents (LAMS) have been used for the endoscopic ultrasound-guided transmural drainage (EUS-TD) of postoperative pancreatic fluid collections (POPFC) and peripancreatic fluid collections (PFC). In this study, we aimed to assess the efficacy and safety of novel electrocautery-enhanced LAMSs (Hot-Plumber with Z-EUS IT) with different inter-flange lengths (13 to 33 mm) for managing POPFC and PFC.
Methods:
We reviewed the interventional EUS database of Asan Medical Center to identify consecutive patients with POPFC or PFC who underwent EUS-TD with the novel LAMSs between April 2023 and December 2023. Technical success, clinical success, and adverse events were evaluated.
Results:
Ten patients (5 with POPFCs and 5 with PFCs) were included in the analysis. The technical and clinical success rates were 100% and 90%, respectively. The LAMS was placed using either the freehand technique (n=5) or the over-the-guide wire technique (n=5). One patient successfully underwent endoscopic necrosectomy for walled-off necrosis through a novel LAMS.Two patients experienced adverse events (one stent migration and one infection). The LAMS was removed in 7 out of 10 patients after resolution of the fluid collection at a median of 61 days (interquartile range, 31 to 69 days) post-LAMS placement.
Conclusions
EUS-TD using the novel LAMS for POPFC and PFC demonstrated high efficacy and an acceptable safety profile. This novel LAMS represents a viable option when selecting stents for EUS-guided drainage of the POPFC and PFC.

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