CEUS in differential diagnosis of renal focal hyperechoic lesions / 中国医学影像技术

Objective To investigate the value of CEUS in differential diagnosis of benign and malignant renal focal hyperechoic lesions.Methods Data of conventional ultrasound (US) and CEUS of 56 patients with single renal focal hyperechoic lesion were retrospectively analyzed,and differential diagnosis of benign and malignant lesions was performed with US and CEUS,respectively.Taking pathological diagnosis as golden standard,the diagnostic efficacy of US and CEUS were calculated and compared.Results The sensibility,specificity,positive predictive value (PPV),negative predictive value (NPV) and accuracy of US was 70.00％ (14/20),75.00％ (27/36),60.87％ (14/23),81.82％ (27/33) and 73.21％ (41/56),while of CEUS was 80.00％ (16/20),94.44％ (34/36),88.89％ (16/18),89.47％ (34/38) and 89.29 ％ (50/56),respectively.The accuracy,specificity and PPV of CEUS were higher than those of US (all P＜0.05).The consistency of CEUS and pathology was good (Kappa=0.761),while of US and pathology was ordinary (Kappa=0.435).Conclusion CEUS can improve differential diagnostic efficacy of renal focal hyperechoic lesions.

Expression and significance of miR-125a and Mcl-1 in intestinal tissue after massive small bowel resection in rat / 中华胃肠外科杂志

<p><b>OBJECTIVE</b>To investigate the expression and significance of miR-125a and anti-apoptotic protein Mcl-1 in intestinal tissue after massive small bowel resection in intestinal adaptation.</p><p><b>METHODS</b>Sprague-Dawley rats (54 male rats, 8-week old) were divided into 3 groups randomly, including two control groups. Rats in the experiment group were subjected to 70% massive small bowel resection. Rats in the resection group underwent simple intestinal resection and anastomosis. Rats in the control group underwent laparotomy alone. A 5 cm intestine approximately 1 cm distal to the anastomosis was harvested a week after operation. Expression of Mcl-1 was assessed by immunohistochemistry and real-time PCR was used to detect the expression of miR-125a in intestinal tissue.</p><p><b>RESULTS</b>The positive expression of Mcl-1 in the experiment group was 18.8%(3/16), significantly lower than that in the control group(76.5%, 13/17) and the resection group (83.33%, 15/18)(both P<0.01). The expression of miR-125a in the experiment group was 1.92, significantly higher than that in the control group (1.01) and the resection group (1.05)(both P<0.01).</p><p><b>CONCLUSION</b>miR-125a and anti-apoptotic protein Mcl-1 may play an important role in intestinal adaptation process and they may regulate each other through a certain pathway.</p>