BackgroundThe application of multiparametric magnetic resonance imaging (mpMRI) for diagnosis of prostate cancer has been recommended by the European Association of Urology (EAU), National Comprehensive Cancer Network (NCCN), and European Society of Urogenital Radiology (ESUR) guidelines. The purpose of this study is to systematically review the literature on assessing the accuracy of mpMRI in patients with suspicion of prostate cancer.MethodWe searched Embase, Pubmed and Cochrane online databases from January 12,000 to October 272,018 to extract articles exploring the possibilities that the pre-biopsy mpMRI can enhance the diagnosis accuracy of prostate cancer. The numbers of true- and false-negative results and true- and false-positive ones were extracted to calculate the corresponding sensitivity and specificity of mpMRI. Study quality was assessed using QUADAS-2 tool. Random effects meta-analysis and a hierarchical summary receiver operating characteristic (HSROC) plot were performed for further study.ResultsAfter searching, we acquired 3741 articles for reference, of which 29 studies with 8503 participants were eligible for inclusion. MpMRI maintained impressive diagnostic value, the area under the HSROC curve was 0.87 (95%CI,0.84–0.90). The sensitivity and specificity for mpMRI were 0.87 [95%CI, 0.81–0.91] and 0.68 [95%CI,0.56–0.79] respectively. The positive likelihood ratio was 2.73 [95%CI 1.90–3.90]; negative likelihood ratio was 0.19 [95% CI 0.14,-0.27]. The risk of publication bias was negligible with P = 0.96.ConclusionResults of the meta-analysis suggest that mpMRI is a sensitive tool to diagnose prostate cancer. However, because of the high heterogeneity existing among the included studies, further studies are needed to apply the results of this meta-analysis in clinic.

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Background: Bladder cancer is a leading cause of cancer-related deaths all over the world. Epidemiological studies of bladder cancer are therefore crucial for policy making. This study was carried out to describe the characteristics of changes in the incidence and mortality of bladder cancer from 1990 to 2016 by age group, gender, geographical region, and sociodemographic index (SDI) and to simultaneously project future trends up to 2030.Methods: Incidence and mortality trends in bladder cancer from 1990 to 2016 were described based on data and methodologies from the Global Burden of Disease (GBD) Study. The data also allowed the future trends of bladder cancer incidence and mortality to be predicted by ARIMA model. Trends were analyzed by age group, gender, and SDI. Projections to 2030 were sub-analyzed by SDI countries. R software (x64 version 3.5.1), SAS (version 9.3), and SPSS (version 22.0) were used throughout the process.

Background: This study aims to explore and project the temporal trends in incidence and mortality of testicular cancer. Moreover, it can provide theoretical guidance for the rational allocation of health resources.Methods: This study analyzed existing data on testicular cancer morbidity and mortality from 1990 to 2016 and predicted time-varying trends of age-standardized incidence rate (ASIR) and age-standardized death rate (ASDR) from 2017 to 2030 in different ages, regions and sociodemographic index (SDI) quintile sub-groups.

The aim of this study was to estimate the prevalence and correlates of erectile dysfunction (ED) in a sample of Chinese type 2 diabetic men. Between October 2016 and April 2017, male patients with type 2 diabetes mellitus treated in our diabetes outpatient clinic were recruited in this study. The participants were asked to complete a short version of the International Index of Erectile Function (IIEF-5), which was a validated and self-administered questionnaire for the diagnosis and grading of ED severity. All patients screened for erectile function also underwent detailed physical examination, and interviewed for demographic and medical history. A total of 550 men were recruited in this study, of whom 20 patients were excluded and 35 did not complete all scheduled study procedures, leaving 495 patients in the final analysis. As determined by IIEF-5 score, 318 (64.2%) patients had ED. Among the 318 patients with ED, mild, mild-to-moderate, moderate, and severe were 37 (11.6%), 65 (20.4%), 95 (29.9%), and 121 (38.1%), respectively. The prevalence of ED in patients with high education, secondary education, and less than secondary education were 83.3%, 60.2%, and 35.4%, respectively (P < 0.0001). The prevalence of ED was 64.2% in Chinese type 2 diabetic men. Increased age, longer duration of diabetes mellitus, and worse glycemic control may promote the progression of ED among Chinese type 2 diabetic men. We also found that the higher education levels may increase the risk of ED in men with type 2 diabetes mellitus.