Objective To study the ultrasonographic and acoustic contrast features of breast fibroadenoma and breast cancer and explore the value of contrast enhanced ultrasonography in the differential diagnosis of benign and malignant breast tumors. Method A retrospective analysis of 18 cases breast fibroadenoma and 12 cases breast cancer in the performance of contrast-enhanced ultrasound was done. Results After contrast agent injection, tumor dimension increased in 4 cases with breast fibroadenoma and 7 cases with breast cancer. The ultrasonographic and acoustic contrast features of breast fibroadenoma showed no significant changes. They showed stenosis, perpendicular and circumambulates vascular shape. The breast cancers significantly increased the number of tumor blood vessels with the thicker,tortuous blood vessels into the tumor. Conclusions The contrast enhanced ultrasonography assessed more accurate size of tumors. The image displayed grown sizes, more vascularity and bending vascular shape in the breast cancer. It was more accurate than gray-scale ultrasound on diagnosing breast cancer.

Child, Preschool ; Ear, External ; abnormalities ; Humans ; Male ; Nasopharynx ; abnormalities

Objective To investigate the effect of trimetazidine postconditoning on myocardial cell apoptosis in acute ischemia-reperfusion injury in rats.Methods 40 healthy adult Wistar rats were randomly assigned to Sham-operated group,MIRI group(I/R group),trimetazidine group and ischemic postconditioning group(IPOC group).The left anterior descending coronary artery of rat was ligated and the acute myocardial ischemia-reperfusion injury model was established.After that,ultrastructural changes of apoptotic myocardial cells were observed under electron microscope,and apoptotic cells were detected under optical microscope.The expressions of the Bcl-2,caspase-3 apoptosis related proteins were determined.Results ① The degree of ultrastructural injury of apoptotic myocardial cells was mild and basically the same in trimetazidine group versus IPOC group,and had a significant improvement as compared with I/R group.② The degree of myocardial apoptosis was basically the same in trimetazidine versus IPOC group,and lighter than in I/R group.③ Bcl-2 protein expression levels were(61.9 ± 2.9) ％,(21.4 ± 3.2) ％,(46.8 ± 3.5) ％ and (49.7 ± 3.1) ％,and caspase-3 protein expression levels were(38.1±4.5) ％,(72.8±5.7) ％,(47.2±5.1) ％ and(39.8 ±4.6)％ in Sham-operated group,I/R group,trimetazidine group and IPOC group respectively.Compared with I/R group,the expression of Bcl-2 protein was increased obviously,while the expression of easpase-3 protein was decreased in trimetazidine group and IPOC group.But there were no significant differences in the protein levels of Bcl-2 and caspase-3 between trimetazidine group and IPOC group(both P＞0.05).Conclusions Trimetazidine postconditoning can inhibit the myocardial cell apoptosis in acute ischemia-reperfusion injury in rats,and has a protective effect on myocardial cells.

Objective To study the expression and clinical meaning of tight junctions protein regulator PKC θ in human meningioma tissue.Method The expression of PKC θ in 30 non-invasion and 30 invasion meningioma tissue is tested by using immunohistochemistry S-P method,with the goal of analyzing the relationship between the expression of PKC θ and pathology character.Results The positive rate ofPKC θ in invasion meningioma tissue is obviously lower than in non-invasion meningioma tissue.The difference is significant(P<0.05)Conclusions The lower expression of PKC θ in invasion meningioma tissue pmbably affects occurrence and invasion of the meningioma by ehang4ng the structure and function of TJs.

This study aims to explore the differences of event-related potential (ERP) between attention deficit hyperactivity disorder (ADHD) and normal children, so that these differences provide scientific basis for the diagnosis of ADHD. Eight children were identified to be ADHD group by the diagnostic criteria of DSM-IV (diagnostic and statistical manual of mental disorders-IV), and the control group also consisted of 8 normal children. Modified visual-continuous performance test (CPT) was used as the experiment paradigm. The experiment included two major conditions, i. e. Go and NoGo. All the 16 subjects participated in the study. A high density EEG acquisition instrument was used to record the EEG signal and processed these EEG data by means of ERP and spectrum analysis. P2-N2 peak-peak value and spectral peak around 11 Hz were analyzed between ADHD subjects and those in the control group, and then statistical tests were applied to these two groups. Results showed that: (1) Under the condition of Go, ADHD group had a significant lower P2-N2 peak-peak value than the values in the control group (P < 0.05); but under the condition of NoGo there was no significant difference in between. (2) Compared with the control group, the ADHD group had significant lower spectral amplitude around 11 Hz under the condition of NoGo (P < 0.05). However, under the condition of Go the difference was insignificant. In conclusion, there is certain cognitive dysfunction in ADHD children. P2-N2 peak-peak value and spectral peak around 11 Hz could be considered as clinical evaluation indexes of ADHD children's cognitive function. These two objective indexes provide an early diagnosis and effective treatment of ADHD.
Attention Deficit Disorder with Hyperactivity ; diagnosis ; physiopathology ; Brain ; physiopathology ; Case-Control Studies ; Child ; Cognition Disorders ; diagnosis ; physiopathology ; Electroencephalography ; Evoked Potentials ; Humans

Endoscopy ; methods ; Female ; Humans ; Meningocele ; surgery ; Middle Aged ; Pterygopalatine Fossa ; surgery

Cartilage ; pathology ; Catheter Ablation ; adverse effects ; methods ; Female ; Humans ; Laryngeal Nerves ; Microwaves ; Middle Aged ; Necrosis ; Thyroid Gland ; surgery ; Trachea ; pathology ; Vocal Cord Paralysis ; etiology

Objective To evaluate the effect of non-linear blending function for dual-energy CT on image of pulmonary angiogra-phy.Methods 27 patients underwent dual energy CT pulmonary angiography(CTPA).Data obtained with 100 kVp,140kVp,and non-linear blending were divided into group A,B,and C respectively.CT value of emboli were measured.Corresponding signal to noise ratio(SNR )and contrast to noise ratio(CNR)were calculated.One-way Anova analysis and Friedman test were used to ana-lyze statistical significance among these values.Results On quantitative analysis of 27 patients,there was no statistical difference for CT value of CTPA among the three groups(P >0.05).For the noise,CNR and SNR,there were statistically significant among the three groups(P <0.05).Conclusion The non-linear blending function has certain advantages in improved image signal-to-noise ratio and it can be used in CT pulmonary angiography examination for patients suspected pulmonary embolism clinically .

Abstarct:Objective To evaluate mid-term efficacy and complications of Prestige LP cervical disc arthroplasty ( CDA) for treatment of single-level cervical spondylotic myelopathy .Methods Retrospectively analyzed the clinical data of 29 patients who underwent Prestige LP cervical disc arthroplasty from June 2009 to December 2013 and were followed up for 2 to 6 years.Among them, there were 19 males and 10 females, and the average age was (45.4 ±7.6)years old (ranged from 28 to 58 years old).Cardinal symptom of spinal compression occured in 20 cases of them,and nerve root compression occured in the other 9 cases.Clinical symptoms and functional outcomes were evaluated with Japanese Orthopaedic Association(JOA) scores,neck and arm visual analog scale(VAS) scores,and Neck Disability Index(NDI).Oerpation segmental range of motion(ROM) were evaluated with follow-up dynamic X-ray.Displacement,subsidence of the prosthesis,heterotopic ossifi-cation(HO) and other complications were also investigated .Results The 29 patients were followed up for 24 to 66 months,(35.5 ±10.4) months averagely .At the final follow-up,the JOA score,NDI,Neck-VAS and Arm-VAS were (15.62 ±1.12) points,(14.65 ±5.68)%,(1.93 ± 1.10) points,and (0.76 ±0.99) points respectively,which were significant improved compared with (12.03 ±2.23) points,(42.52 ± 16.31)%,(5.00 ±2.22) points,and (4.59 ±3.18) points preoperatively,and the differences were of statistical significance (P<0.05). The opreation segmental ROM was (7.37 ±3.11)°,which was better remained compared with (8.50 ±3.35)°before operation.After the surgery,there were 1 case of forward displacement ,3 cases of backward displacement ,1 case of subsidence of the prosthesis ,3 cases of adja-cent segment degenerations ,and 14 cases of heterotopic ossification .Conclusion The mid-term efficacy and safety of Prestige LP cervical disc arthroplasty is fine .But there is a high incidence of the prosthesis-related complications which may counteract the function of protecting the adjacent segment .Therefore,the indication,operation skills and perioperative period management of cervical disc arthroplasty are impor -tant aspects to avoid the adverse effect .

Objective To study the changes of Na+K+-ATPase,Ca2+Mg2+-ATPase activities in erythrocyte membrane and blood viscosity in children with essential hypertension.Methods The activities of Na+K+-ATPase,Ca2+Mg2+-ATPase in erythrocyte membrane were determined by a colorimetric method.Blood viscosity was measured and analyzed with the statistic analysis SPSS 12.0 software in 50 children from Nov.2004 to Dec.2004 in the people's hospital of guizhou province and adolescents with essential hypertension.Thirty healthy children were collected as control group.Results The activities of Na+ K+-ATPase[(6.12?1.30)?molpi/(gHb?h)and(4.59?1.40)?molpi/(gHb?h)],Ca2+Mg2+-ATPase[(7.46?1.30)?molpi/(gHb?h)and(5.81?1.20)?molpi/(gHb?h)] were lower significantly in hypertension group than those in control group(Pa