ABSTRACT
Objective To explore the characteristic manifestations of breast malignant isodense masses using mammography. Methods 121 breast isodense masses with pathological confirmations were collected.Compared indicators with pathological findings were the tumor size,shape,edge,structure changes around the mass,axillary lymph nodes,skin changes,nipple changes,suspi-cious malignant calcification.χ2 test and Logistic regression analysis were used to evaluate the diagnostic values of each indicator.Re-sults In the 121 isodense masses,73 were benign,48 were malignant tumors.According to χ2 test analysis,factors impacted the nature of mass including:tumor morphology (χ2 =14.376,P =0.002),tumor edge (χ2 = 21.555,P =0.000),structure twisted surrounding the mass (χ2 =26.939,P =0.000),axillary lymph nodes (χ2 =1 6.285,P =0.000),skin thickening (χ2 =4.698,P =0.030).According to multivariate binary Logistic regression analysis,risk factors of the Logistic regression model included:edge infiltrating of mass (P =0.014),structure twisted surrounding the mass (P =0.003),axillary lymph nodes (P =0.026).Conclusion The characteristic manifestations of breast malignant isodense masses include edge infiltrating,structure twisted surrounding the mass,axillary lymph nodes.These manifestations are of great significance in differential diagnosis of breast isodense masses.
ABSTRACT
OBJECTIVE To investigate the drug resistance of pathogens in pediatric ICU and discuss how to treat infections caused by these resistant strains.METHODS After genus identification,bacterial susceptibility test was carried out using Kirby-Bauer disk method.RESULTS A total of 270 clinical isolates were analyzed including 194(72%) strains of Gram-negative bacilli and 76(28%) strains of Gram-positive cocci.From them 182(67%) strains were isolated from sputum,78(29%) strains from blood and 10(4%) strains from secretion.The most common bacilli were Klebsiella spp,coagulase negative Staphylococcus,Escherichia coli,Enterococcus spp and Pseudomonas aeruginosa.About 66.7% of E.coli and 91.1% of Klebsiella spp isolates produced ESBLs,the isolating rate of MRCNS was 83.9%.CONCLUSIONS The characteristics of pathogen distribution and drug resistance surveillance must be understood in order to use antibiotics rationally,to control the increasing trend of drug resistance pathogens and to forbid the break out of nosocomial infections.