Background: Liver transplantation (LT) is the standard treatment for end-stage liver disease; however, it can lead to biliary strictures in 25%–30% of cases. We aimed to develop a biodegradable stent loaded with paclitaxel that could be inserted during surgery without requiring removal. We evaluated the safety and efficacy of this stent using a porcine model. Methods: Fourteen pigs underwent simulated ischemic injury during LT, and a biodegradable paclitaxel-eluting stent was inserted after duct-to-duct anastomosis.Pigs were divided into four groups: no stent (n=3), bare stent (n=3), 300 µg paclitaxel stent (n=4), and 900 µg paclitaxel stent (n=4). After 3 months of follow-up, autopsies were conducted to obtain common bile duct tissue samples, and inflammation and fibrosis thicknesses were assessed under a microscope. Results: Most tissues had resolved the inflammatory reactions by the 3-month mark. The thinnest fibrosis thickness was observed in the 900 µg group (359.08±167.23 µm); however, no statistical significance was observed. Conclusion This study demonstrated the safety of paclitaxel-eluting biodegradable biliary stents and their positive effects on fibrosis in an ischemic bile duct porcine model. This biodegradable stent represents a potential approach for overcoming the complications associated with biliary strictures after LT.

Purpose: Processing methods for hematopoietic stem cells vary significantly across institutions, with no standardized guidelines currently in place. This lack of standardization presents challenges in ensuring consistent quality and out‑ comes of stem cell transplantation procedures. This study investigated current practices in peripheral blood stem cell (PBSC) processing and storage among transplant centers in Korea to establish a foundation for the development of standardized guidelines. Methods: A comprehensive questionnaire was distributed to 46 hematopoietic stem cell transplantation centers in Korea, examining five key areas: PBSC collection procedures, use of cryopreservatives, cryopreservation protocols, quality control measures, and thawing protocols. Results: Analysis of the 29 responses revealed significant variations across different stages of PBSC handling. All centers used controlled-rate freezers, and 92.9% stored cells at temperatures below -150 ◦ C . However, other prac‑ tices varied widely. Additional post-collection processing was performed by 53.8% of respondents. DMSO concen‑ trations ranged from 5 to 15%, with diverse combinations of supplementary media. Notably, 28.6% of patients did not undergo post-thaw quality assessment tests. Conclusion This study identified significant heterogeneity in PBSC processing practices across Korean transplant centers. These findings underscore the need for evidence-based standardized guidelines to ensure consistent product quality and improve transplantation outcomes.

Purpose: Stem cell transplantation (SCT) has historically played a major role in the long-term remission of mantle cell lymphoma (MCL), an incurable hematological malignancy. Using data from the Korean Society of Bone and Marrow Transplantation registry, we retrospectively analyzed the role of autologous (auto) and allogeneic (allo) SCT in longterm MCL survival. Methods: This study analyzed data from 188 patients (age ≥ 19 years at the time of transplantation) who underwent a transplant for MCL from 2011 to 2020. Progression-free survival (PFS) was defined as the time from transplantation to disease progression, relapse, or death from any cause. Overall survival (OS) was defined as the time from transplan‑ tation to death from any cause or the last follow-up. Results: In total, 109 patients underwent consolidative SCT after first-line chemotherapy. The 3-year PFS and OS rates were 65.4% and 78.5%, respectively, in the auto-SCT group, and 66.7% and 71.4%, respectively, in the allo-SCT group. The PFS and OS did not differ significantly between the auto- and allo-SCT groups. As part of salvage treatment, 52 patients with relapsed or refractory disease underwent auto- or allo-SCT. Patients who underwent auto-SCT with complete remis‑ sion/partial remission status reported better outcomes. In patients with refractory status, allogeneic transplantation using human leukocyte antigen (HLA) fully matched donors was a significantly favorable factor for PFS and OS. Conclusion The long-term survival of patients who underwent consolidative transplantation was similar to that reported in previous studies. Auto-SCT may be beneficial in patients who respond to salvage therapy, whereas allo-SCT with HLA-matched donors may be an alternative for patients with refractory disease. 

Multiple myeloma (MM), a hematological malignancy, is characterized by malignant plasma cell proliferation in the bone marrow. Recent treatment advances have significantly improved patient outcomes associated with MM.In this study, we aimed to develop comprehensive, evidence-based guidelines for the diagnosis, prognosis, and treat‑ ment of MM. We identified 12 key clinical questions essential for MM management, guiding the extensive literature review and meta-analysis of the study. Our guidelines provide evidence-based recommendations by integrating patient preferences with survey data. These recommendations include current and emerging diagnostic tools, thera‑ peutic agents, and treatment strategies. By prioritizing a patient-centered approach and rigorous data analysis, these guidelines were developed to enhance MM management, both in Korea and globally.

Objective: This is the first prospective cohort study of Huntington’s disease (HD) in Korea. This study aimed to investigate the caregiver burden in relation to the characteristics of patients and caregivers. Methods: From August 2020 to February 2022, we enrolled patients with HD from 13 university hospitals in Korea. We used the 12-item Zarit Burden Interview (ZBI-12) to evaluate the caregiver burden. We evaluated the clinical associations of the ZBI-12 scores by linear regression analysis and investigated the differences between the low- and high-burden groups. Results: Sixty-five patients with HD and 45 caregivers were enrolled in this cohort study. The average age at onset of motor symptoms was 49.3 ± 12.3 years, with an average cytosine-adenine-guanine (CAG)n of 42.9 ± 4.0 (38–65). The median ZBI-12 score among our caregivers was 17.6 ± 14.2. A higher caregiver burden was associated with a more severe Shoulson–Fahn stage (p = 0.038) of the patients. A higher ZBI-12 score was also associated with lower independence scale (B = -0.154, p = 0.006) and functional capacity (B = -1.082, p = 0.002) scores of patients. The caregiving duration was longer in the high- than in the low-burden group. Caregivers’ demographics, blood relation, and marital and social status did not affect the burden significantly. Conclusion HD patients’ neurological status exerts an enormous impact on the caregiver burden regardless of the demographic or social status of the caregiver. This study emphasizes the need to establish an optimal support system for families dealing with HD in Korea. A future longitudinal analysis could help us understand how disease progression aggravates the caregiver burden throughout the entire disease course.

Objective: The Scales for Outcomes in Parkinson’s Disease–Cognition (SCOPA-Cog) was developed to assess cognition in patients with Parkinson’s disease (PD). In this study, we aimed to evaluate the validity and reliability of the Korean version of the SCOPACog (K-SCOPA-Cog). Methods: We enrolled 129 PD patients with movement disorders from 31 clinics in South Korea. The original version of the SCOPA-Cog was translated into Korean using the translation-retranslation method. The test–retest method with an intraclass correlation coefficient (ICC) and Cronbach’s alpha coefficient were used to assess reliability. Spearman’s rank correlation analysis with the Montreal Cognitive Assessment-Korean version (MOCA-K) and the Korean Mini-Mental State Examination (K-MMSE) were used to assess concurrent validity. Results: The Cronbach’s alpha coefficient was 0.797, and the ICC was 0.887. Spearman’s rank correlation analysis revealed a significant correlation with the K-MMSE and MOCA-K scores (r = 0.546 and r = 0.683, respectively). Conclusion Our results demonstrate that the K-SCOPA-Cog has good reliability and validity.

Purpose: Cystoscopy is a diagnostic test performed frequently in urology outpatient clinics. Despite the large number of inspections, the associated pain, discomfort, or anxiety can markedly affect patient compliance and adherence to subsequent surveillance protocols. This study conducted a prospective, randomized study to investigate the potential efficacy of music and pyuria on pain or anxiety during outpatient cystoscopy. Materials and Methods: In this single-institution, randomized study, the participants were assigned to a music-intervention or non-music control group. The music-intervention group underwent an identical procedure with the addition of Johann Sebastian Bach’s “Air on the G String” from Suite No. 3 in D major, BWV 1068. Urinalysis was performed to determine if pyuria affects pain during the procedure. Results: The patient-reported outcomes, encompassing the changes in the STAI-X-1 (State-Trait Anxiety Inventory-X-1) scores, subjective levels of discomfort, embarrassment, satisfaction, and pain, were similar in the two groups. In contrast, the surgeons reported statistically significant differences in their evaluations of the same items as patient-reported outcomes of the two groups. The patient-reported pain showed no significant differences between the pyuria-negative group (0-2 and 3-5 WBC/HPF) and pyuria-positive group (>5 WBC/HPF). Conclusions The data from this study do not support the hypothesis that musical intervention during cystoscopy alleviates pain or anxiety to any significant extent.In addition, pyuria did not affect the patient’s reported pain. Nevertheless, a notable impact was observed in the surgeons’ assessments, suggesting that the musical accompaniment may alter the surgeons’ perception of patient pain and anxiety levels throughout the procedure.

Purpose: Cystoscopy is a diagnostic test performed frequently in urology outpatient clinics. Despite the large number of inspections, the associated pain, discomfort, or anxiety can markedly affect patient compliance and adherence to subsequent surveillance protocols. This study conducted a prospective, randomized study to investigate the potential efficacy of music and pyuria on pain or anxiety during outpatient cystoscopy. Materials and Methods: In this single-institution, randomized study, the participants were assigned to a music-intervention or non-music control group. The music-intervention group underwent an identical procedure with the addition of Johann Sebastian Bach’s “Air on the G String” from Suite No. 3 in D major, BWV 1068. Urinalysis was performed to determine if pyuria affects pain during the procedure. Results: The patient-reported outcomes, encompassing the changes in the STAI-X-1 (State-Trait Anxiety Inventory-X-1) scores, subjective levels of discomfort, embarrassment, satisfaction, and pain, were similar in the two groups. In contrast, the surgeons reported statistically significant differences in their evaluations of the same items as patient-reported outcomes of the two groups. The patient-reported pain showed no significant differences between the pyuria-negative group (0-2 and 3-5 WBC/HPF) and pyuria-positive group (>5 WBC/HPF). Conclusions The data from this study do not support the hypothesis that musical intervention during cystoscopy alleviates pain or anxiety to any significant extent.In addition, pyuria did not affect the patient’s reported pain. Nevertheless, a notable impact was observed in the surgeons’ assessments, suggesting that the musical accompaniment may alter the surgeons’ perception of patient pain and anxiety levels throughout the procedure.

Purpose: Cystoscopy is a diagnostic test performed frequently in urology outpatient clinics. Despite the large number of inspections, the associated pain, discomfort, or anxiety can markedly affect patient compliance and adherence to subsequent surveillance protocols. This study conducted a prospective, randomized study to investigate the potential efficacy of music and pyuria on pain or anxiety during outpatient cystoscopy. Materials and Methods: In this single-institution, randomized study, the participants were assigned to a music-intervention or non-music control group. The music-intervention group underwent an identical procedure with the addition of Johann Sebastian Bach’s “Air on the G String” from Suite No. 3 in D major, BWV 1068. Urinalysis was performed to determine if pyuria affects pain during the procedure. Results: The patient-reported outcomes, encompassing the changes in the STAI-X-1 (State-Trait Anxiety Inventory-X-1) scores, subjective levels of discomfort, embarrassment, satisfaction, and pain, were similar in the two groups. In contrast, the surgeons reported statistically significant differences in their evaluations of the same items as patient-reported outcomes of the two groups. The patient-reported pain showed no significant differences between the pyuria-negative group (0-2 and 3-5 WBC/HPF) and pyuria-positive group (>5 WBC/HPF). Conclusions The data from this study do not support the hypothesis that musical intervention during cystoscopy alleviates pain or anxiety to any significant extent.In addition, pyuria did not affect the patient’s reported pain. Nevertheless, a notable impact was observed in the surgeons’ assessments, suggesting that the musical accompaniment may alter the surgeons’ perception of patient pain and anxiety levels throughout the procedure.

Purpose: Cystoscopy is a diagnostic test performed frequently in urology outpatient clinics. Despite the large number of inspections, the associated pain, discomfort, or anxiety can markedly affect patient compliance and adherence to subsequent surveillance protocols. This study conducted a prospective, randomized study to investigate the potential efficacy of music and pyuria on pain or anxiety during outpatient cystoscopy. Materials and Methods: In this single-institution, randomized study, the participants were assigned to a music-intervention or non-music control group. The music-intervention group underwent an identical procedure with the addition of Johann Sebastian Bach’s “Air on the G String” from Suite No. 3 in D major, BWV 1068. Urinalysis was performed to determine if pyuria affects pain during the procedure. Results: The patient-reported outcomes, encompassing the changes in the STAI-X-1 (State-Trait Anxiety Inventory-X-1) scores, subjective levels of discomfort, embarrassment, satisfaction, and pain, were similar in the two groups. In contrast, the surgeons reported statistically significant differences in their evaluations of the same items as patient-reported outcomes of the two groups. The patient-reported pain showed no significant differences between the pyuria-negative group (0-2 and 3-5 WBC/HPF) and pyuria-positive group (>5 WBC/HPF). Conclusions The data from this study do not support the hypothesis that musical intervention during cystoscopy alleviates pain or anxiety to any significant extent.In addition, pyuria did not affect the patient’s reported pain. Nevertheless, a notable impact was observed in the surgeons’ assessments, suggesting that the musical accompaniment may alter the surgeons’ perception of patient pain and anxiety levels throughout the procedure.