ABSTRACT
Objective : To evaluate the value of contrast-enhanced ultrasound quantitative analysis in the differential diagnosis of benign and malignant breast intraductal lesions. Methods ¡¤ A retrospective analysis was made on the characteristics of conventional ultrasound and the time-intensity curve (TIC) of contrast-enhanced ultrasound (CEUS) of 71 breast intraductal lesions in 63 patients, which were surgically resected and pathologically confirmed in Shanghai Tenth People’s Hospital from January 2016 to December 2018. The parameters of CEUS perfusion in the lesion area were obtained. Independent sample t test was used to analyze the differences of quantitative parameters between benign and ma-lignant lesions. The receiver operating characteristic (ROC) curve was used to evaluate the value of conventional ultrasound, quantitative analysis of CEUS and their combination for the differential diagnosis of benign and malignant intraductal lesions of breast. Results ¡¤ There were 42 benign lesions and 29 malignant lesions. Among the quantitative parameters of CEUS, time to peak (t=2.072, P=0.042), peak intensity (t=-2.629, P=0.011), rise slope rate (t=3.015, P=0.004) and the area under the curve (AUC) (t=3.308, P=0.001) were statistically significant. The sensitivity, specificity, accuracy, positive predictive value, negative predictive value and area under the ROC curve of conventional ultrasound were 31.03%, 90.48%, 66.20%, 69.20%, 65.50% and 0.608. Those of quantitative analysis of CEUS were 75.86%, 71.43%, 73.24%, 64.70%, 81.10% and 0.776. And those of their combination were 86.21%, 97.62%, 92.96%, 96.15%, 91.11% and 0.943. Conclusion ¡¤ Conventional ultrasound is of limited value in the diagnosis of breast intraductal lesions, and quantitative analysis of CEUS is of great significance in differentiating benign from malignant breast intraductal lesions. The combination of conventional ultrasound and quantitative analysis of CEUS can significantly im-prove the diagnostic value.
ABSTRACT
Objective:To investigate the changes of genus-level gut microbiome in patients with spinal cord injury and its significance in clinical rehabilitation. Methods:Fecal samples were collected from 23 patients with spinal cord injury (patients group) and 21 healthy volunteers (control group). Gut microbiome was detected by 16S rDNA high-throughput sequencing. Bioinformatics methods such as species composition analysis and Random Forest were used to analyze the distribution and difference of genus-level gut microbiome between two groups. Results:Compared with the control group, the increased important marker genera in the patients group were as follows: UBA1819, Ruminiclostridium 9, Ruminococcaceae NK4A214 group, Ruminococcus 2, Ruminococceae UCG-005, Ruminiclostridium 5, Flavonifractor belonging to Ruminococceae; Aglistes, dgA-11 gut group, Rikenaceae RC9 gut group belonging to Rikenellaceae; [Eubacterium] oxidoreducens group belonging to Lachnospiraceae; Intestinibacter belonging to Peptostreptococcaceae; Escherichia-Shigella belonging to Enterobacteriaceae; Tannerellaceae belonging to Parabacteroides (|U| > 1.962, P < 0.05). The decreased marker genera in the patients group was Fusobacterium of Fusobacteriaceae (|U| = -2.284, P < 0.05). Conclusion:There are significant differences of gut microbiome in spinal cord injury patients. The relative abundance of Ruminococcaceae relating to depression, Ruminococcus relating to central nervous system diseases, and enteropathogenic bacteria such as Escherichia-Shigella and Erysipelothrix increase; and the relative abundance of butyrate-producing bacteria and anti-inflammatory bacteria benefitting to the intestine decrease; which may play a role in clinic.