Publications by authors named "Chi-kwok Chan"

Article Synopsis
  • The study aimed to see how the Prostate Health Index (PHI) affects clinical decisions for men with PSA levels between 4-10 ng/mL and normal digital rectal exams in Hong Kong public hospitals from 2016 to 2017.
  • Of 2828 patients followed for 2 years, 82% showed low PHI risk scores (under 35), leading 83% of those with elevated PSA to choose against biopsy, while higher PHI scores correlated with increased detection of high-grade prostate cancer.
  • The conclusion suggests that using PHI in clinical decisions helped reduce unnecessary biopsies and improved the detection of significant prostate cancer compared to traditional PSA methods.
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This study aimed to report the outcomes of active surveillance (AS) in the management of low-risk prostate cancer (PCa). It recruited 87 men who were prospectively followed up according to the Prostate Cancer Research International Active Surveillance (PRIAS) protocol with local adaptation at SH Ho Urology Centre, Prince of Wales Hospital, Hong Kong, China. We investigated the predictors of disease progression and found that baseline prostate-specific antigen density (PSAD) and the presence of the highest Prostate Imaging-Reporting and Data System (PI-RADS) score 5 lesion on magnetic resonance imaging (MRI) are significantly correlated with disease progression.

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Background: Lower urinary tract symptoms (LUTS) are common complaint in urology practice and affecting the quality of life for patients. This article aims to perform a systematic review and meta-analysis on the global prevalence of LUTS overall, and according to different patient characteristics.

Methods: We searched MEDLINE and Embase for population-based epidemiological studies reporting the prevalence of LUTS from inception to 1 Jan 2021.

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Background: The link between nocturia and aging male symptoms (AMS) has not been scientifically established. This study aimed to measure the degree of severity of AMS that impacts health-related quality of life (HRQoL) in adult males living with nocturia and to determine the predictive values of nocturnal factors on AMS.

Methods: This is an extended analysis of new data collected by using the Hong Kong Traditional AMS (HK-AMS) scale and the Cantonese version of the Pittsburgh Sleep Quality Index (PSQI) in a recently published cross-sectional population-based survey.

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Purpose: This study aimed to investigate the functional and urodynamic outcome of Aquablation in patients with acute urinary retention (AUR) on catheters.

Methods: Men aged 50-70 who failed medical treatment of BPO with AUR failing to wean off urethral catheter were recruited to undergo Aquablation. Individuals were assessed pre-operatively and at 3 and 6 months after surgery.

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Article Synopsis
  • The study investigated the outcomes of HIFU (High-Intensity Focused Ultrasound) focal therapy for localized prostate cancer, examining its effectiveness using MRI-US fusion for treatment localization.
  • The research included 20 patients and compared conventional HIFU methods to those using MRI-US fusion, noting differences in operative time and PSA changes post-treatment.
  • Results showed no major differences in clinical outcomes between the two approaches, with some patients needing further treatment due to recurrence, indicating both methods are viable options for managing localized prostate cancer.
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Background: Most prevalence surveys on nocturia have focused on older populations. This study aimed to measure the nocturia prevalence across the full spectrum of male adults living in Hong Kong, where severity and associated quality-of-life (QoL) were also explored.

Methods: A cross-sectional population-based survey was conducted in men aged 18 or above using the ICIQ-NQoL Questionnaire.

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Background: To update the Hong Kong Urological Association-Hong Kong Society of Uro-Oncology consensus statements on the management of advanced prostate cancer, the same panelists as in the previous consensus panel held a series of meetings to discuss updated clinical evidence and experiences.

Methods: The previous consensus statements were retained, deleted, or revised, and new statements were added. At the final meeting, all statements were reviewed and amended as appropriate, followed by panel voting.

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Aim: In response to the fast-developing coronavirus disease 2019 (COVID-19) pandemic, special arrangement and coordination are urgently required in the interdisciplinary care of patients across different medical specialties. This article provides recommendations on the management of different stages of localized or metastatic prostate cancer (PC) amid this pandemic.

Methods: The Hong Kong Urological Association and Hong Kong Society of Uro-oncology formed a joint discussion panel, which consisted of six urologists and six clinical oncologists with extensive experience in the public and private sectors.

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Objectives: Cancer is the second leading cause of death globally in 2018 with an estimated 9.6 million deaths. The costs of managing malignant ureteric obstruction (MUO) is a significant burden to any healthcare system.

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Objective: To investigate the safety and feasibility of robot-assisted single-port radical prostatectomy using the da Vinci single-port surgical system.

Methods: This was a prospective phase 1 clinical study of prostate cancer patients undergoing robot-assisted single-port radical prostatectomy using the da Vinci single-port surgical system. Primary outcome measures included the conversion rate and 30-day complications after surgery.

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Objective: To formulate consensus statements to facilitate physician management strategies for patients with clinically localized prostate cancer (PCa) in Hong Kong by jointly convening a panel of 12 experts from the two local professional organizations representing PCa specialists, who had previously established consensus statements on the management of metastatic PCa for the locality.

Methods: Through a series of meetings, the panellists discussed their clinical experience and the published evidence regarding various areas of the management of localized PCa, then drafted consensus statements. At the final meeting, each drafted statement was voted on by every panellist based on its practicability of recommendation in the locality.

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It is largely unknown whether lower urinary tract symptoms (LUTS) or acute retention of urine (AROU) is linked to shorter life expectancy in men. We conducted a multicenter, retrospective database analysis of patients undergoing transurethral resection of prostate (TURP) to study their relationships. Multivariate Cox regression analysis and Kaplan-Meier analysis with stratification to age and indication of TURP were performed.

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Objective: It has been hypothesized that endothelial dysfunction and pelvic atherosclerosis may contribute to lower urinary tract symptoms (LUTS). We assessed the relationship between cardiovascular risk factors and LUTS severity in male patients presented to urology clinic.

Methods: It is a cross-sectional study on patients who presented between 2013 and 2015 with LUTS.

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To establish a set of consensus statements to facilitate physician management strategies for patients with metastatic prostate cancer (mPCa) in Hong Kong. A local expert consensus was organized jointly by the two main professional organizations representing prostate cancer specialists in Hong Kong. A total of 12 experts were included in the consensus panel.

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Purpose: The overall objective of the survey was to systematically examine patients' perspectives on lower urinary tract symptoms (LUTS) and their treatment in Southeast Asia.

Methods: A multinational cross-sectional survey involving adult men seeking consultation at urology outpatient clinics because of LUTS in Southeast Asia was conducted using convenience sampling. Self-reported prevalence, bother, treatment and treatment satisfaction of selected LUTS including urgency, nocturia, slow stream, and post-micturition dribble were evaluated.

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Introduction: We evaluated the factors associated with secondary hemorrhage after bipolar transurethral resection of prostate (TURP) and vaporization of prostate.

Materials And Methods: The perioperative data of patients undergoing endoscopic surgery for benign prostatic hyperplasia (BPH) were prospectively collected. Procedures involved included bipolar TURP, bipolar vaporization of prostate, and hybrid bipolar TURP/vaporization of prostate.

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Introduction: We systemically reviewed the current evidence on prostatic artery embolization (PAE) in treating men with benign prostatic hyperplasia.

Methods: A systemic literature search was conducted in PubMed, EMBASE and Web of Science on 1 May 2016 without time constraints. Outcomes of interest included the changes in the International Prostate Symptom Score (IPSS), quality-of-life (QOL) score, peak urinary flow (Qmax), post-void residual urine (PVR), International Index of Erectile Function (IIEF) score, prostate volume (PV) and prostate-specific antigen (PSA) level.

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Purpose: Our aim was to investigate the detrusor muscle sampling rate after monopolar versus bipolar transurethral resection of bladder tumor (TURBT).

Methods: This was a single-center, prospective, randomized, phase III trial on monopolar versus bipolar TURBT. Baseline patient characteristics, disease characteristics and perioperative outcomes were compared, with the primary outcome being the detrusor muscle sampling rate in the TURBT specimen.

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Objectives: The aim of the present study was to establish the safety and efficacy profile of transurethral resection in saline (TURis) bipolar vaporization of the prostate relative to monopolar transurethral resection of prostate (TURP) and to test the hospital stay efficiency after TURis vaporization.

Materials And Methods: in this multicenter, double-blinded, prospective, randomized controlled trial, men aged 50-75 years old were randomized into two arms: TURis bipolar vaporization and monopolar TURP. Intraoperative details, perioperative parameters, and postoperative functional outcomes were assessed after intervention.

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Purpose: Robot-assisted radical cystectomy (RARC) was first introduced in 2003. Although there have been modifications to the surgical techniques over the years, in every published RARC series the surgical robot is invariably docked between the patient's legs. We evaluated the use of a side-docking approach in RARC.

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Objective: To investigate the feasibility of side-docking techniques in robot-assisted urologic pelvic surgery.

Materials And Methods: Six consecutive patients undergoing robot-assisted pelvic surgery participated in the study: 3 undergoing radical cystectomy for muscle-invasive bladder cancer, 1 patient undergoing ureteroneocystostomy for ureteric stricture, 1 patient undergoing partial cystectomy for urothelial cancer in a bladder diverticulum, and 1 undergoing transvesical simple prostatectomy. Each patient was placed in the lithotomy-Trendelenburg position, with the robot docked over the patient's right side.

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Unlabelled: Study Type - Diagnostic (exploratory cohort) Level of Evidence 3b What's known on the subject? and What does the study add? Electronic uroflowmetry reasonably predicts the likelihood of bladder outlet obstruction (BOO) and risk of AUR. This low-cost device, Uflowmeter(™) , allows men to perform uroflowmetry at home with ease and the results are compatible with that of electronic uroflowmentry. It can also estimates risk of AUR and the need for TURP to relieve LUTS.

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Objective: To review the long-term outcome of selective renal arterial embolization (SAE) in treating renal angiomyolipomas (AMLs) in both elective and emergency settings.

Materials And Methods: Between October 1988 and September 2008, 27 patients (28 renal units) were treated with SAE, either on an emergency basis for 15 (53.6%) bleeding AMLs or prophylactically for 13 (46.

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