ObjectiveTo systematically review the diagnostic value of ultrasound for breast cancer with axillary sentinel lymph nodes, so as to provide evidence for clinical decision-making. MethodsWe searched the databases including PubMed, EMbase, The Cochrane Library (Issue 12, 2013), CBM, CNKI, WanFang Data and VIP for studies about ultrasound in the diagnosis of breast cancer with axillary sentinel lymph nodes till December 31st, 2013. According to the inclusion and exclusion criteria, literature was screened, data were extracted, and methodological quality of the included studies was evaluated. Meta-analysis was then conducted using Meta-Disc 1.4 software. ResultsA total of 12 studies involving 2 188 cases were included. The pooled results of meta-analysis showed that sensitivity and specificity were 0.75 (95%CI 0.72 to 0.77) and 0.91 (95%CI 0.89 to 0.92), respectively; positive likelihood ratio and negative likelihood ratio were 6.54 (95%CI 4.68 to 8.89) and 0.22 (95%CI 0.15 to 0.33), respectively; diagnostic odds ratio was 33.59 (95%CI 17.87 to 63.12); and the AUC was 0.934 3. ConclusionUltrasound is has relatively high value in diagnosis of breast cancer with axillary sentinel lymph nodes. However, due to the influence caused by the limited quality and various potential heterogeneity, more high quality RCTs with large sample size are needed to further verify the above conclusion.
ObjectiveTo systematically review the value of contrast-enhanced ultrasound in diagnosis of benign and malignant renal tumors. MethodsSuch databases as PubMed, EMbase, The Cochrane Library (Issue 9, 2013), CBM, CNKI, WanFang Data and VIP were searched by Sep 31st, 2013. Two reviewers independently screened literature according to the inclusion and exclusion criteria, extracted data, and assessed the methodological quality of included studies. Then meta-analysis was performed using Meta-Disc 1.4 software. ResultsSeven studies involving 462 patients were finally included. ROC curve showed shoulder-arm shape. The results of Spearman suggested significance of the threshold effect. The results of meta-analysis showed that, the area under curve (AUC) was 0.98. ConclusionContrast-enhanced ultrasound can improve diagnostic accuracy, which is of important value in the diagnosis and differential diagnosis of benign and malignant renal tumors. Due to limited quality and quantity of the included studies, the abovementioned conclusion still needs to be verified by conducting more high quality studies.
ObjectiveTo investigate the community residents' awareness of knowledge on cardiovascular disease prevention and control and their access methods to relevant information. MethodsBetween June and August, 2013, the residents aged above 45 who came to community health center for diagnosis or treatment were investigated by questionnaires including the acknowledge of prevention for cardiovascular diseases and the access methods to relevant information. ResultsA total of 1 000 residents were involved in this study, including 394 (39.40%) males and 606 (60.60%) females aged from 45 to 98 with an average of 68.3±10.4. The highest rate of awareness of cardiovascular prevention knowledge was regular physical exercise (89.20%), followed by low salt diet (67.20%) and fried food (6.30%). The highest rate of access to the information was information provided verbally by doctors or nurses (77.50%), followed by television and radio (56.00%). ConclusionCommunity center should strengthen the health education of cardiovascular disease prevention and control. Health education should be practiced in an easy way for the residents.