Publications by authors named "Yong K Kwon"

Background: Pediatric liver transplantation for small recipients presents significant challenges, particularly in securing suitably sized donor organs. This case report illustrates the feasibility of performing an in situ split procurement in an 18.5-kg toddler, the smallest recorded case in the OPTN database to date, for a critically ill 8-week-old infant recipient.

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Background: We examined the combined effects of donor age and graft type on pediatric liver transplantation outcomes with an aim to offer insights into the strategic utilization of these donor and graft options.

Methods: A retrospective analysis was conducted using a national database on 0-2-year-old (N = 2714) and 3-17-year-old (N = 2263) pediatric recipients. These recipients were categorized based on donor age (≥40 vs <40 years) and graft type.

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Background: The optimal surgical option in patients with multifocal hepatocellular carcinoma (MHCC) is an area of active research. The preference varies based on geographic variations and institutional policies. We sought to determine long-term outcomes in patients with MHCC based on surgical treatment-liver transplant (LT) vs resection (LR).

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Background: Small-for-size syndrome (SFSS) in pediatric liver transplant recipients, particularly those weighing less than 10 kg, is rare. This report describes a case of a 15-month-old whole liver transplant recipient who suffered SFSS, and systematic literature review was performed to identify outcomes of such cases and potential risk factors for SFSS.

Case Presentation: A 15-month-old toddler with a history of biliary atresia underwent a deceased donor whole liver transplant.

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Introduction: The management of T2 multifocal hepatocellular carcinoma (MHCC) is controversial, and the comparative impact of liver resection (LR) versus tumor ablation (TA) on survival continues to be debated. The aim of our study was to examine short- and long-term survival for LR and TA in a nationally representative cohort. We hypothesized that patients who underwent LR would have improved survival.

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Background: Hepatic resection (HR) is an excellent option for patients with hepatocellular carcinoma (HCC). For patients meeting the Milan criteria, a liver transplant (LT) is also a viable option for patients with HCC, especially those with end-stage liver disease. With increasing rates of LTs amongst the elderly, we sought to determine long-term outcomes in patients who underwent HR compared to LTs in this patient population.

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Introduction: The role of angioembolization (AE) in patients with benign liver diseases is an area of active research. This study aims to assess any difference in liver resection outcomes in patients with benign tumors dependent on utilization of preoperative AE.

Methods: A retrospective cohort study of patients undergoing elective liver resections for benign liver tumors was performed using the National Surgical Quality Improvement Program database (2014-2019).

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Living donor liver transplantation is an effective means to decrease organ shortage. However, many potential living donors are currently being denied due to ABO incompatibility or inadequate donor liver volume. Liver paired exchange (LPE) provides a practical solution to overcome these obstacles, and yet the first case of LPE in the United States was only recently reported in 2020.

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Unlabelled: Recently, a new liver allocation policy called the acuity circles (AC) framework was implemented to decrease geographic disparities in transplant metrics across donor service areas. Early analyses have examined the changes in outcomes because of the AC policy. However, perceptions among transplant surgeons and staff regarding the new policy remain unknown.

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Article Synopsis
  • The study investigates whether arterial reinforcement (AR) using polyglycolic acid sheets (PAS) and fibrin sealant (FS) can prevent delayed hemorrhage (DH) after pancreatic surgery for tumors.
  • It compares outcomes between two groups of patients: one that received AR and another that did not, revealing that DH occurred significantly less in the AR group.
  • The findings suggest that AR is effective at reducing the risk of DH in patients with postoperative pancreatic fistula, ultimately improving patient safety after pancreatoduodenectomy.
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Background: The use of the American College of Surgeons (ACS) NSQIP has increased in hepatobiliary and pancreatic surgery (HPB) research as it provides access to high-quality surgical outcome data on a national scale. Using the ACS NSQIP database, this study examined the methodologic reporting of HPB publications.

Study Design: Web of Science core collection (all editions) was queried for all HPB studies using the ACS NSQIP database published between 2004 and 2022.

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Introduction: With the increasing age of patients, more patients on chronic preoperative steroids are undergoing liver resections. Our study aimed to assess the relationship between preoperative steroids and outcomes.

Methods: We performed a retrospective review of the 2014-2019 NSQIP database of all patients undergoing liver resections.

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Objectives: Liver transplant is emerging as a potential treatment option for patients with isolated colorectal liver metastasis. In this review article, we analyzed the published literature on liver transplant outcomes in such patients.

Materials And Methods: Four prospective studies documenting the clinical outcomes in patients with colorectal liver metastasis who underwent liver transplant were analyzed to study the feasibility of liver transplant in such patients.

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Article Synopsis
  • There is a discussion about how much a liver from a living donor should weigh compared to the person receiving it to ensure a good recovery after transplant.
  • Experts looked at different studies to figure out the lowest weight ratio that is still safe for the recipient and came up with helpful guidelines.
  • They found that a ratio of 0.8% or higher is usually safe for recovery, but in some cases, a lower ratio can be okay if doctors choose the right donor and take special care during surgery.
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Unlabelled: Reduced-size deceased donors and living donor liver transplantation (LDLT) can address the organ shortage for pediatric liver transplant candidates, but concerns regarding technical challenges and the risk of complications using these grafts have been raised. The aim of this study was to compare outcomes for pediatric LDLT and deceased donor liver transplantation (DDLT) via systematic review.

Methods: A systematic literature search was performed to identify studies reporting outcomes of pediatric (<18 y) LDLT and DDLT published between 2005 and 2019.

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Background: As the novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has emerged as a viral pandemic, data on the clinical characteristics and outcomes of patients with SARS-CoV-2 infection undergoing solid organ transplant are emerging. The objective of this systematic review was to assess currently published literature relating to the management, clinical course, and outcome of SARS-CoV-2 infection in liver, kidney, and heart solid organ transplant recipients.

Methods: We conducted a systematic review to assess currently published literature relating to the management, clinical course, and outcome of SARS-CoV-2 infection in liver, kidney, and heart solid organ transplant recipients.

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Background: Biliary complications in liver transplantation (LT) can cause significant morbidity or even lead to a potential graft loss and patient mortality. Oftentimes biliary internal stents (ISs) are used at the time of LT to lower the risk for or prevent these biliary complications; however, their efficacy and outcomes remain controversial.

Methods: A retrospective cohort study was conducted on all of the adult patients who underwent a deceased-donor LT (DDLT) with an end-to-end choledococholedocostomy.

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Unlabelled: COVID-19 emerged as a viral pandemic in the year 2019. The practice and scope of surgery and medicine transformed radicially as the virus spread across the world. There is an urgent need to understand the outcomes of COVID-19 infected patients who undergo surgery.

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Purpose Of Review: In the United States, the leading indication for kidney transplant is primary kidney dysfunction arising from chronic hypertension and diabetes. However, an increasing indication for kidney transplantation is secondary kidney dysfunction in the setting of another severe organ dysfunction, including pancreas, liver, heart, and lung disease. In these settings, multiorgan transplantation is now commonly performed.

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Poultry red mites (PRMs), , are one of the most harmful ectoparasites of laying hens. Because of their public health impact, safe, effective methods to eradicate PRMs are greatly needed. Carbon dioxide (CO₂) was shown to eradicate phytophagous mites; however, there is no evidence that PRMs can be eradicated by CO₂.

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Purpose Of Review: In the United States, most of the liver allografts come from deceased donors, and our current liver recipient selection process is heavily centered on the ethical principle of utility to maximize the net benefit to the liver recipient community as a group rather than individuals due to the organ scarcity. Although living donor liver transplantation contributes less than 5% of total liver transplant in the United States, these living donor recipients are being subjected to the same selection process designed to benefit the group as a whole rather than the individuals. We would like to examine if these recipients who have living donors should be subjected to the same selection process.

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Purpose: Spontaneously ruptured hepatocellular carcinoma (srHCC) is known to be a life-threatening complication with poor prognosis. Although there are various treatment modalities, there is no definite treatment guideline. The purpose of this study was to review the surgical outcome and prognosis of srHCC treated with intraoperative radiofrequency ablation (RFA) and distilled water peritoneal lavage (DWPL).

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Background: Large-for-size (LFS) graft should be avoided when performing an adult deceased donor liver transplantation (DDLT) as it is associated with abdominal compartment syndrome, severe graft injury, and primary graft nonfunction. When inadvertently facing with LFS graft intraoperatively, the most commonly reported approach has been a surgical reduction of the right lobe despite its technical difficulty in addition to ongoing coagulopathy after graft reperfusion. We report a case where we performed a left lateral sectionectomy instead of a right lobe modification.

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We report the first case of a healthy 23-year-old female who underwent an interventional radiology-guided embolization of a hepatic adenoma, which resulted in a gas forming hepatic liver abscess and septicemia by . A retrospective review of Clostridial liver abscesses was performed using a PubMed literature search, and we found 57 clostridial hepatic abscess cases. The two most commonly reported clostridial species are and (64.

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