Publications by authors named "Lui S Lee"

Introduction: Robot-assisted radical cystectomy (RARC) has gained momentum in the management of muscle invasive bladder cancer (MIBC). Predictors of RARC outcomes are not thoroughly studied. We aim to investigate the implications of preoperative hydronephrosis on oncological outcomes.

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Background And Objective: There is no consensus on de-escalation of monitoring during active surveillance (AS) for prostate cancer (PCa). Our objective was to determine clinical criteria that can be used in decisions to reduce the intensity of AS monitoring.

Methods: The global prospective AS cohort from the Global Action Plan prostate cancer AS consortium was retrospectively analyzed.

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Article Synopsis
  • Active surveillance (AS) is a safe and acceptable treatment strategy for men with low- and intermediate-risk prostate cancer, showing a high overall survival (OS) rate of 84.1% and metastasis-free survival (MFS) exceeding 99% over a follow-up period of more than 6 years.
  • The study analyzed clinical data from nearly 27,000 men across 15 countries, revealing that while there was no significant change in overall survival rates over time, metastasis-free survival rates improved notably.
  • Treatment changes were primarily driven by anxiety or tumor progression, with the most common radical treatment being surgery, which resulted in 90% of men remaining free from biochemical recurrence after 5 years.
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The following case discusses the surgical considerations for a patient presenting with cardiogenic shock secondary to a phaeochromocytoma crisis with stress cardiomyopathy. The patient underwent an interval laparoscopic adrenalectomy. Pneumoperitoneum insufflation was performed at lower pressures; manipulation of the adrenal tumour was minimised, and the adrenal vein was ligated early.

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Article Synopsis
  • Robot-assisted radical cystectomy (RARC) is increasingly used for treating muscle invasive bladder cancer, with two main urinary diversion methods being ileal conduit and orthotopic neobladder.
  • A study involving 521 patients found that those receiving neobladder had better disease-free and overall survival rates compared to those with ileal conduit, although results were not statistically significant after adjustments.
  • The study concluded that neobladder is equally safe in terms of perioperative outcomes and suggests further research is needed to confirm these findings.
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Background: Non-muscle invasive bladder cancer (NMIBC) is one of the most common malignant tumors of the urinary system. There is an urgent need for further studies to elucidate the underlying mechanisms of bladder cancer (BC) progression. It has been observed that C-C chemokine ligand 5 (CCL5) and its receptor C-C chemokine receptor type 5 (CCR5) are expressed abnormally and activated in solid tumors and hematological malignancies, which is gaining increasing attention.

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Objectives: Multiple clinical practice guidelines, conflicting evidence, and physician perceptions result in variations in risk stratification among patients with non-muscle-invasive bladder cancer (NMIBC). This study aims to describe the extent of this variation and its impact on management approaches in the Asia-Pacific region.

Methods: We conducted a cross-sectional survey involving 32 urologists and seven medical oncologists with ≥8 years of experience managing early-stage bladder cancer patients across Australia, Hong Kong, Japan, South Korea, Singapore, and Taiwan.

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Objectives: Examine the understanding of terminologies and management patterns of bacillus Calmette-Guérin (BCG)-unresponsive nonmuscle invasive bladder cancer (NMIBC) in six territories in Asia-Pacific.

Methods: This study involved two phases: (1) a survey with 32 urologists and 7 medical oncologists (MOs) and (2) a factorial experiment and in-depth interviews with 23 urologists and 2 MOs. All clinicians had ≥8 years' experience managing NMIBC patients in Australia, Hong Kong, Japan, South Korea, Singapore, and Taiwan.

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Objective: The NEAR trial is a single-arm phase II trial investigating the efficacy of neoadjuvant apalutamide and radical prostatectomy in the treatment of D'Amico intermediate- to high-risk prostate cancer. This publication focuses on health-related quality of life (HRQoL) during 12 weeks of neoadjuvant apalutamide treatment.

Methods: From 2017 to 2019, 30 suitable patients received neoadjuvant apalutamide 240 mg once daily for 12 weeks followed by radical prostatectomy (ClinicalTrials.

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Background: Little is known about the consequences of delaying radical prostatectomy (RP) after Active Surveillance (AS) according to stringent or wider entry criteria. We investigated the association between inclusion criteria and rates, and timing of adverse pathological findings (APFs) among patients in GAP3 cohorts. Methods: APFs (GG ≥ 3, pT ≥ 3, pN > 0 and positive surgical margins [R1]) were accounted for in very low-risk (VLR: grade group [GG] 1, cT1, positive cores < 3, PSA < 10 ng/mL, PSA density [PSAD] < 0.

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Objective: Treatment efficacy of androgen deprivation therapy with radical prostatectomy for intermediate- to high-risk prostate cancer is less well-studied. The NEAR trial is a single-arm, phase II investigation of neoadjuvant apalutamide monotherapy and radical prostatectomy (RP) in the treatment of D'Amico intermediate- and high-risk prostate cancer (NCT03124433).

Materials And Methods: Patients with histologically-proven, D'Amico intermediate- to high-risk prostate adenocarcinoma received apalutamide 240 mg once-daily for 12 weeks followed by RP + /-lymphadenectomy.

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Aims: Ultra-hypofractionated radiotherapy (UHF-RT) is widely utilized in men with localized prostate cancer (PCa). There are limited data in Asian cohorts. We report the outcomes of a single-arm, phase II trial of UHF-RT from an Asian center.

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We present a case of an iatrogenic complete left proximal ureteric injury after a lumbar 1 laminectomy and intradural tumour excision and lumbar 4/5 transforaminal lumbar interbody fusion. Initial management included a percutaneous nephrostomy for urinary diversion followed by definitive urinary reconstruction with an ileal ureter.

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Objectives: To evaluate the clinically-significant prostate cancer (csCaP) detection rate of systematic (SBx) vs. targeted biopsy (TBx), after accounting for the overlapping systematic cores within the MRI regions of interest.

Materials And Methods: We identified 398 consecutive men who underwent both transperineal systematic and targeted biopsy between January 2015 to January 2019.

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Background: Signs of disease progression (28%) and conversion to active treatment without evidence of disease progression (13%) are the main reasons for discontinuation of active surveillance (AS) in men with localised prostate cancer (PCa). We aimed to develop a nomogram to predict disease progression in these patients.

Methods: As a first step in the development of a nomogram, using data from Movembers' GAP3 Consortium (n=14,380), we assessed heterogeneity between centres in terms of risk of disease progression.

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Purpose: Several multiparametric magnetic resonance imaging (mpMRI)-based models have been developed with significant improvements in diagnostic accuracy for clinically significant prostate cancer (csCaP), but lack proper external validation. We therefore sought to externally validate and compare all published mpMRI-based csCaP risk prediction models in an independent Asian population.

Patients And Methods: A total of 449 men undergoing combined transperineal fusion-targeted/systematic prostate biopsy at our specialist center between 2015 to 2019 were retrospectively analyzed.

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Synovial sarcomas are most commonly localised in extremities, especially in the lower thigh and knee areas. Comprising less than 1% of all malignancies, retroperitoneal synovial sarcoma is very rare with primary synovial sarcoma of the kidney being even more infrequent and difficult to diagnose. We describe a case report of a renal synovial sarcoma in a young adult who was initially managed as a case of Wunderlich's syndrome secondary to what was believed to be a ruptured renal angiomyolipoma.

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Objectives: To evaluate the impact of intralesional heterogeneity on the performance of multiparametric magnetic resonance imaging (mpMRI) in determining cancer extent and treatment margins for focal therapy (FT) of prostate cancer.

Patients And Methods: We identified men who underwent primary radical prostatectomy for organ- confined prostate cancer over a 3-year period. Cancer foci on whole-mount histology were marked out, coding low-grade (LG; Gleason 3) and high-grade (HG; Gleason 4-5) components separately.

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Bladder cancer is a heterogenous disease that is associated with tangible mortality in muscle invasive disease. The WHO 2016 classification of urothelial tumours reflects the contemporary approach towards histological variants in bladder cancer, including variants of urothelial carcinoma (UC) and non-urothelial variants. This review focuses on variant histology in UC, and discusses the importance of accurate histological diagnosis, and subsequent risk stratification and therapeutic decision making based on proper variant recognition.

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A 26-year-old man underwent laparoscopic appendicectomy for acute appendicitis that was carried out uneventfully after initial urethral catheterisation to empty the bladder. Postoperatively, he developed oliguria associated with high drain output and elevated drain fluid creatinine. A contrast-enhanced computed tomography urography scan showed a small amount of contrast in the intraperitoneal space.

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