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Anterior perineal hernia after anterior exenteration

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Asian Journal of Urology 2017年第4期4卷 253-255页

作者： Ka Wing Wong Terence Chun-ting Lai Ada tsui-lin Ng Brian Sze-ho Ho james hok-leung tsu Chiu Fung Tsang W.K.Ma Ming Kwong Yiu Division of Urology Department of SurgeryQueen Mary HospitalUniversity of Hong KongHong KongChina

Perineal hernia is a rare complication of anterior *** reported this complication after an anterior exenteration for bladder cancer with bleeding complication requiring packing and second-look *** approach is a simple... 详细信息

关键词： Perineal hernia Anterior exenteration Bladder cancer Mesh repair

Prostate cancer detection upon transrectal ultrasound-guided biopsy in relation to digital rectal examination and prostate-specific antigen level： what to expect in the Chinese population？

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Asian Journal of Andrology 2015年第5期17卷 821-825,I0010页

作者： Jeremy YC Teoh Steffi KK Yuen james HL tsu Charles KW Wong Brian SH Ho Ada TL Ng Wai-Kit Ma Kwan-Lun Ho Ming-Kwong Yiu Department of Surgery Division of Urology Queen Mary Hospital University of Hong Kong Hong Kong China

We investigated the prostate cancer detection rates upon transrectal ultrasound （TRUS）-guided biopsy in relation to digital rectal examination （DRE） and prostate-specific antigen （PSA）, and risk factors of prostate cancer detection in the Chinese population. Data from all consecutive Chinese men who underwent first TRUS-guided prostate biopsy from year 2000 to 2013 was retrieved from our database. The prostate cancer detection rates with reference to DRE finding and PSA level of 〈 4, 4-10, 10.1-20, 20.1-50 and 〉 50 ng ml^-1 were investigated. Multivariate logistic regression analyses were performed to investigate for potential risk factors of prostate cancer detection. A total of 2606 Chinese men were included. In patients with normal DRE, the cancer detection rates were 8.6%, 13.4%, 21.8%, 41.7% and 85.2% in patients with PSA 〈 4, 4-10, 10.1-20, 20.1-50 and 〉 50 ng ml^-1 respectively. In patients with abnormal DRE, the cancer detection rates were 12.4%, 30.2%, 52.7%, 80.6% and 96.4% in patients with PSA 〈 4, 4-10, 10.1-20, 20.1-50 and 〉 50 ng m1-1 respectively. Older age, smaller prostate volume, larger number of biopsy cores, presence of abnormal DRE finding and higher PSA level were associated with increased risk of prostate cancer detection upon multivariate logistic regression analyses （P 〈 0.001）. Chinese men appeared to have lower prostate cancer detection rates when compared to the Western population. Taking the different risk factors into account, an individualized approach to the decision of TRUS-guided biopsy can be adopted.

关键词： Chinese digital rectal examination prostate biopsy prostate cancer prostate-specific antigen

The performance characteristics of prostate-specific antigen and prostate-specific antigen density in Chinese men

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Asian Journal of Andrology 2017年第1期19卷 113-116页

作者： Jeremv YC Teoh Steffi KK Yuen james HL tsu Charles KW Wong Brian SH Ho Ada TL Ng Wai-Kit Ma Kwan-Lun Ho Ming-Kwong Yiu Division of Urology Department of Surgery Queen Mary Hospital University of Hong Kong Hong Kong China

We investigated the performance characteristics of prostate-specific antigen （PSA） and PSA density （PSAD） in Chinese men. All Chinese men who underwent transrectal ultrasound-guided prostate biopsy （TRUS-PB） from year 2000 to 2013 were included. The receiver operating characteristic （ROC） curves for both PSA and PSAD were analyzed. The sensitivity, specificity, positive predictive value （PPV） and negative predictive value （NPV） at different cut-off levels were calculated. A total of 2606 Chinese men were included. For the ROC, the area under curve was 0.770 for PSA （P〈 0.001） and 0.823 for PSAD （P〈 0.001）. PSA of 4.5 ng ml^-1 had sensitivity of 94.4%, specificity of 14.1%, PPV of 29.5%, and NPV of 86.9%; PSAD of 0.12 ng ml^-1cc^-1 had sensitivity of 94.5%, specificity of 26.6%, PPV of 32.8%, and NPV of 92.7%. On multivariate logistic regression analyses, PSA cut-off at 4.5 ng ml^-1 （OR 1.61, 95% CI 1.05-2.45, P = 0.029） and PSAD cut-off at 0.12 ng ml^-1 cc^-1 （OR 6.22, 95% CI 4.20-9.22, P 〈 0.001） were significant predictors for prostate cancer detection on TRUS-PB. In conclusion, the performances of PSA and PSAD at different cut-off levels in Chinese men were very different from those in Caucasians. PSA of 4.5 ng ml^-1 and PSAD of O. 12 ng ml^-1 cc^-1 had near 95% sensitivity and were significant predictors of prostate cancer detection in Chinese men.

关键词： Chinese prostate cancer transrectal ultrasound-guided prostate biopsy prostate-specific antigen prostate-specific antigen density

Association of time to prostate-specific antigen nadir and logarithm of prostate-specific antigen velocity after progression in metastatic prostate cancer with prior primary androgen deprivation therapy

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Asian Journal of Andrology 2017年第1期19卷 98-102页

作者： Jeremy YC Teoh james HL tsu Steffi KK Yuen Peter KF Chiu Samson YS Chan Ka-Wing Wong Kwan-Lun Ho Simon SM Hou Chi-Fai Ng Ming-Kwong Yiu Division of Urology Department of Surgery The Chinese University of Hong Kong Prince of Wales Hospital Shatin Hong Kong China Division of Urology Department of Surgery Queen Mary Hospital University of Hong Kong Hong Kong China.

We investigated the association of time to prostate-specific antigen nadir （TTPN） and logarithm of prostate-specific antigen velocity after progression Log（PSAVAP） in metastatic prostate cancer with prior primary androgen deprivation therapy （ADT）. All metastatic prostate cancer patients treated with primary ADT from 2000 to 2009 were reviewed. Patients who developed disease progression were included in the subsequent analyses. Patients were categorized into three groups according to their TTPN： TTPN of 〈3 months, 3-17 months, and 〉17 months. We compared the Log（PSAVAP） between the different TTPN groups using Mann-Whitney U-test and Kruskal-Wallis test. Further multiple linear regression analyses on Log（PSAVAP） were performed to adjust for other potential confounding factors. Among 419 patients who were treated with primary ADT, 306 patients developed disease progression with a median follow-up of 28 months, Longer TTPN was associated with lower Log（PSAVAP）（P = 0.008） within all subgroup analyses （TTPN of 〈3 vs 3-17 months, P = 0.020; TTPN of 3-17 vs 〉17 months, P = 0.009; and TTPN of 〈3 vs 〉17 months, P = 0.001）. Upon multiple linear regression analyses, baseline PSA （regression coefficient 0.001, P = 0.045）, PSA nadir （regression coefficient 0.002, P = 0.040）, and TTPN （regression coefficient -0.030, P = 0.001） were the three factors that were significantly associated with Log（PSAVAP）. In conclusion, a longer TTPN was associated with lower Log（PSAVAP） in metastatic prostate cancer patients following primary ADT. TTPN cut-offs at 3 months and 17 months appeared to have prognostic significance in predicting Log（PSAVAP）. TTPN may serve as a good prognostic indicator in deciding the treatment strategy in patients with disease progression.

关键词： androgen deprivation therapy prostate cancer prostate-specific antigen velocity after progression ti me to prostate-specific antigen nadir

Multiparametric magnetic resonance imaging/transrectal ultrasound fusion prostate biopsy with semi-robotic navigation in the Chinese population： initial results

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Asian Journal of Andrology 2018年第1期20卷 93-94页

作者： Wai Kit Ma Brian SH HO Andrew SH Lai Ka Cheong Lam Yun Sang Chan Lawrance KC Yip Ada TL Ng james HL tsu Ming Kwong Yiu Division of Urology Department of Surgery The University of Hong Kong Queen Mary Hospital Hong Kong China Department of Diagnostic Radiology The University of Hong Kong Queen Mary Hospital Hong Kong China

Dear Editor, The current standard 12-core systematic transrectal ultrasound （TRUS）-guided biopsy in prostate cancer diagnosis has the disadvantages of overdetecting indolent tumors, while failing to identify clinically significant cancers in up to 35%.1 Advances in imaging techniques, notably the multiparametric magnetic resonance imaging （mpMRI）, allow clinically significant prostate cancers to be detected with more precise localization） Fusion of MRI and real-time TRUS enables targeted biopsy of suspicious lesions, overcoming human error, and inability of biopsy site tracking in cognitive fusion？ Multiple Western series have suggested a higher detection rate, higher specificity, and better risk stratification with fusion biopsy.

关键词： CANCER GUIDANCE SYSTEM