Publications by authors named "Cheah Yee Lee"

Background: Hepatocellular carcinoma (HCC) has a rising incidence and mortality in North America. Liver transplantation (LT) with adjunctive therapies offers excellent outcomes. However, HCC recurrences are associated with high mortality.

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Background: The deceased donor shortage in the United States has led to increased utilization extended criteria donor (ECD) liver grafts. Centers often utilize ECD grafts in patients with low Model for End-Stage Liver Disease (MELD) scores, like patients with hepatocellular carcinoma (HCC). However, few studies have directly examined the outcomes of using ECD grafts in patients with HCC.

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Article Synopsis
  • Safe and effective liver tissue removal (parenchymal transection) is essential in hepatectomies, and robotic surgery offers various tools and techniques for this purpose.
  • Key instruments include the Vessel Sealer Extend, which seals vessels but is less effective on tough livers, and the Synchroseal, which has a more delicate design but can experience efficiency issues due to char buildup.
  • Other techniques like the robotic Harmonic Scalpel and ultrasonic aspirators can enhance dissection precision, though they often require skilled assistants, highlighting the importance of combining approaches for optimal results.
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  • * A targeted outreach program in Texas was implemented and led to an increase in referrals and waitlisting for LT among Hispanic patients, as well as a rise in the number of transplants received.
  • * However, financial barriers emerged as a significant issue, with about 50% of the Hispanic patients unable to proceed with LT due to cost concerns, indicating the need for further research to address these financial obstacles.
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Background: The COVID-19 pandemic has led to an increase in SARS-CoV-2-test positive potential organ donors. The benefits of life-saving liver transplantation (LT) must be balanced against the potential risk of donor-derived viral transmission. Although emerging evidence suggests that the use of COVID-19-positive donor organs may be safe, granular series thoroughly evaluating safety are still needed.

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Robotic surgery is emerging as a feasible minimally invasive approach for donor hepatectomy at specialized centers. The aim of this article is to systematically describe the surgical techniques for robotic hilar dissection and right lobe mobilization in right donor hepatectomy. The setup of the robotic arms, the dissection of inflow vessels and retrohepatic inferior vena cava, and the pearls and pitfalls of these two parts of the operation are detailed.

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Robotic surgery is emerging as a feasible minimally invasive approach for donor hepatectomy at specialized centers. The aim of this article is to systematically describe the surgical techniques for robotic parenchymal transection and bile duct division in right donor hepatectomy. The setup of the robotic arms, methods of parenchymal transection using robotic instruments, and right hepatic duct division with the aid of indocyanine green dye are detailed, along with the pearls and pitfalls of these two parts of the operation.

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Transplant oncology is an emerging concept of cancer treatment with a promising prospective outcome. The applications of oncology, transplant medicine, and surgery are the core of transplant oncology to improve patients' survival and quality of life. The main concept of transplant oncology is to radically cure cancer by removing the diseased organ and replacing it with a healthy one, aiming to improve the survival outcomes and quality of life of cancer patients.

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The objective is to identify whether trainees demonstrate improvement in a standardized knot-tying task as assessed by Global Evaluative Assessment of Robotic Skills (GEARS) score after completion of a virtual reality (VR) robotic curriculum. An IRB-exempt prospective study was conducted with surgical trainees from August 2021 to February 2023. Participants initially performed a baseline robotic suturing task in which they were instructed to tie interrupted square knots in 10 min.

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Article Synopsis
  • Liver retransplantation (reLT) has worse survival rates compared to primary liver transplant (LT), prompting a systematic review to identify key factors affecting overall and graft survival after reLT.
  • The review analyzed 25 studies, finding that patients needing pre-transplant ventilation and having high serum creatinine levels faced the highest mortality risks, along with factors like recipient age and cold ischemia time.
  • Although the analysis faced challenges due to varied study methodologies, it identified seven significant variables influencing survival after reLT, highlighting areas for future research to enhance outcomes.
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This study sought to develop basic robotic surgical skills among surgical trainees across multiple specialties using a VR-based curriculum and provided objective, on-demand, automated assessments using the Intuitive Learning platform. This curriculum was developed using the Da Vinci Skills Simulator and included 24 exercises. A pre-test and post-test were required for completion of the curriculum.

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Gallbladder (GB) torsion is a rare surgical emergency seen in the elderly. It occurs due to the rotation of the gallbladder along the axis of the cystic artery and cystic duct. This study aimed to report a case of an acute GB torsion in an elderly female patient diagnosed by multi-detector computed tomography (MDCT).

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Background: Fish bone migration from the gastrointestinal tract into the liver is an unusual cause of liver abscess.

Materials And Methods: We describe successful laparoscopic removal of intrahepatic fish bones in 2 patients who presented with liver abscesses. Both patients were admitted to our institution with a 2-week history of right upper quadrant pain, fever, chills, and rigors.

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Application of minimal access surgery in acute care surgery is limited due to various reasons. Laparoscopic omental patch repair (LOPR) for perforated peptic ulcer (PPU) surgery is safe and feasible but not widely implemented. We report our early experience of LOPR with emphasis on strict selection criteria.

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Superior mesenteric artery (SMA) syndrome is an uncommon cause of duodenal outlet obstruction. Symptoms and signs suggestive of this condition are nonspecific, and a high index of suspicion coupled with appropriate imaging studies are necessary for diagnosis. We present the case of a 70-year-old man who developed SMA syndrome following prolonged hospitalisation for a surgically treated bleeding duodenal ulcer.

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The incidence of morbidity and mortality after living donor liver transplantation (LDLT) is not well understood because reporting is not standardized and relies on single-center reports. Aborted hepatectomies (AHs) and potentially life-threatening near-miss events (during which a donor's life may be in danger but after which there are no long-term sequelae) are rarely reported. We conducted a worldwide survey of programs performing LDLT to determine the incidence of these events.

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Introduction: Spillage of gallstones into the peritoneal cavity (dropped gallstones) is more common in laparoscopic compared with open cholecystectomy. Subsequent infectious complications are often delayed, occurring in 0.1% to 2.

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Background: Complex laparoscopic tasks are nearly impossible to complete when the telescope is pointed toward the operator (i.e., paradoxic image).

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In regions with a limited deceased donor pool, living donor adult liver transplantation (LDALT) has become an important treatment modality for patients with hepatocellular carcinoma (HCC) and cirrhosis. Studies have shown higher recurrence rates of HCC after LDALT in comparison with deceased donor liver transplantation (DDLT). The aim of our study was to examine the outcome results and recurrence rates for patients with HCC who underwent LDALT at our center.

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Background: This study aimed to assess the impact of wait times on patient survival following liver transplantation for hepatocellular carcinoma (HCC) in a single donor service area.

Patients And Methods: Patients listed in the New England Organ Bank (NEOB) from 1996 to 2005 for liver transplantation with a diagnosis of HCC were identified from the United Network for Organ Sharing database. The following data were extracted: date of listing, date removed from the wait list, indication for wait list removal, patient death and date of last known follow-up.

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