ObjectiveTo evaluate the application of high b-value diffusion weighted imaging (DWI) and ADC values for malignant and benign breast lesions.MethodsThere were 165 patients with 171 suspicious malignant breast lesions received low and high b-value ( 500 and 1500 s/mm2 ) DWI scan before dynamic contrast-enhanced MRI (DEC-MRI).Using normal breast as the reference base,the signal intensity and ADC values of the 171 lesions on high-b-value ( b = 1500 s/mm2 ) DWI were retrospectively analyzed If a lesion showed abnormal enhancement on DCE-MRI and high signal intensity on high-b-value (b = 1500 s/mm2 ) DWI,that lesion was defined as positive result on behalf of malignant lesion; the otherwise was defined as negative result on behalf of benign lesion.ADC values were calculated for the 111 lesions with positive results on DWI.And all lesions received a biopsy after MR scan.References to the histopatholngical results,the amounts of positive and negative results on high-b value DWI were recorded.Using 1.13 × 10 -3mm2/s as the cutoff value,the sensitivity and specificity of ADC value for the diagnosis of malignant breast lesion were calculated.Fisher exact tests and Wilcoxon rank sum tests were used forstatistical analyses.ResultsThere are 91 malignant and 80 benign lesions the 171 lesions confirmed by histopathology.On high-b value DWI,139 lesions were visually positive results,including 83 malignant and 56 benign lesions.Other 32 lesions were visually negative results,including 24 benign lesions and 8 malignant lesions (non-mass ductal carcinoma in situ).There are statistically significant difference between malignant and benign lesions ( P ＜ 0.01 ).All invasive carcinoma and mass-forming DCIS were visually positive results,whereas eight non-mass DCIs lesions were visually negative results,the overall sensitivity and specificity were 91.2％ (83/91)and 30.0％ (24/80),respectively.In the 111 lesions with DWI positive result ( 110 mass lesions and one focal lesion),the mean ADC value of the 63 malignant lesions was (0.73 ±0.24) × 10-3 mm2/s,whereas the mean ADC value of the 48 benign lesions was( 1.19 ±0.42) ×10-3 mm2/s.There was statistically significant difference between benign and malignant lesions (Z =5.818,P ＜0.01 ).When ADC value of 1.13 × 10-3 mm2/s was chosen as the cutoff value,61 malignant lesions were true positive results,2 mucinous carcinoma were false-negative results,27 benign lesions were true negative results,21 benign lesions were false-positive results,the sensitivity and specificity was 96.8％(61/63) and 56.2％ (27/48),respectively.ConclusionsHigh b-value DWI and ADC values were useful for distinguishing of malignant and benign breast lesions,but it should be cautious when it was used for the diagnosis of non-mass breast lesions.

Diabetes Mellitus ; drug therapy ; Diabetic Angiopathies ; drug therapy ; Diagnosis, Differential ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Hypoglycemic Agents ; therapeutic use ; Medicine, Chinese Traditional ; Phytotherapy

Objective:To study the feasibility and reliability of using phosphorylated H2AX(?H2AX)as a predictor for sensitivity of hepatic carcinoma cell HepG2.215 to chemotherapy agents: etoposide, doxorubicin, mitomycin, and cisplatin. Methods: HepG2.215 cells were exposed to etoposide, doxorubicin, mitomycin or cisplatin of 1, 2, 4 and 20 concentration index (CI). Untreated HepG2.215 cells were taken as control. The proportion of HepG2.215 cells expressing ?H2AX was measured by flow cytometry, the number of ?H2AX foci in HepG2.215 cells was measured by immunocytochemistry, and cell proliferation was measured by MTT. The correlation between the number of ?H2AX foci and the percentage of HepG2.215 cells expressing ?H2AX in HepG2.215 cells was analyzed; the correlation of CI with the percentage of HepG2.215 cells expressing ?H2AX or ?H2AX foci and inhibitory rate of cell proliferation was analyzed; and the correlation of inhibitory rate of cell praliferation with the percentage of HepG2.215 cells expressing ?H2AX or ?H2AX foci was also analyzed. Results: There was a positive correlation between the number of ?H2AX foci and the percentage of HepG2.215 cells expressing ?H2AX in HepG2.215 cells after treatment with the above 4 agents (all P

A harmonious physician-patient relationship is the basis of high-quality medical service,and the ultimate goal of building up humanistic care in hospitals.Based on the proposal of "Three Alls" and combined with successful experiences in practice,this paper comes up with some effective means in constructing a harmonious physician-patient relationship in order to provide hospital managers with feasible ideas and suggestions.

Objective To investigate the clinical value of vaginal myomectomy. Methods From March 2005 to May 2008,78 women with abnormal uterine bleeding were diagnosed with submucous myoma by hysteroscopy combined with ultrasonography. All the myomas were located in the lower uterine segment,and the diameter of the tumor ranged from 30 mm to 63 mm. The patients were divided into two groups to underwent vaginal myomectomy (vaginal group,36 cases) or abdominal electrotomy (open group,42 cases). The operation time,intraoperative blood loss,postoperative hospital stay and recovery of the two groups were compared. Results The vaginal operation was accomplished in all of the 36 cases. Compared with the open group,the vaginal group had significantly shorter operation time [(64.7?10.4) min vs (71.1?11.3) min,t=-2.599,P=0.011],less intraoperative blood loss [(200.0?38.4) ml vs (253.6?47.6) ml,t=-5.412,P=0.000],quicker recovery of bowel movement [(18.5?4.3) h vs (30.9?4.7) h,t=-12.078,P=0.000],and shorter postoperative hospital stay [(4.9?1.2) d vs (7.0?1.3) d,t=-7.368,P=0.000]. Follow-up was available in all of the 78 cases for 3 to 40 months (mean,28 months),during which no relapse occurred,and no statistical differences in pregnancy rate between the two groups was revealed [2.8% (1/36) vs 4.8% (2/42),?2=0.000,P=1.000]. The operation satisfaction rates in both of the two groups were up to 100%. Conclusions Vaginal myomectomy has advantages in less hemorrhage,fast recovery,short postoperative hospital stay,and low complication rate. For the tumors located in the lower uterine segment or those larger than 30 mm in diameter,vaginal myomectomy is an alternative to hysteroscopic electrotomy.

Objective To improve the understanding of the radioactive charcteristics of vertebral eosinophilic granuloma.Methods The imaging features (X-ray?CT and MRI) of 10 cases with vertebral eosinophilic granuloma were retrospectively analyzed.Diagnoses of all the patients had been confirmed with pathlolgical examination after operation.Results All the patients had vertebral body damages,7 with osteolytic damages and 3 with cystic damages.Intervertebral crevice became narrowing or disappearing .Some vertebral appendix and paravertebral soft tissue were involved.Conclusion It is out of proportion among the vertebral body damages,the involved vertedral arch,the changes of intervertebral crevice and the mass of paravertebral soft tissue.The remaining bone fragment without sequestrum in the damage ares is considered as the main characteristic expression of vertebral eosinophilic granuloma.

Objective To validate scientificalness,practicability and useful values in medical care of Zhang-Lu index(ZLI).Me-(thods) ZLI=weight(g)+250/height(cm)?head circumference(cm)?2 was computed and compared with the conventional body weight for gestational age based data of body height,body weight and head circumference measured from 858 neonates in Benxi.Results The ZLI of the first 3 days of fullterm appropriate for gestational age(AGA) was higher than reference from national neonatal physical growth science research association.The difference was significantly(P

The humanity education of science and engineering college has brought not only historical chance but also impact and challenge with the coming of new century.This text has probed into graduate students' humanity education requirement and countermeasures.

Interferon-γ-inducible protein 10 (IP-10),also known as chemokine (C-X-C motif) ligand 10(CXCL10),belongs to the CXC subfamily.IP-10 exerts its function by binding to chemokine (C-X-C motif) receptor 3 or Toll-like receptor 4.IP-10 plays an important role in the occurrence and development of autoimmune diseases.The expression of IP-10 in blood and body fluid is closely associated with the activity of autoimmune disease.IP-10 is expected to become a potential new marker and possess a significant application value in early screening,condition monitoring and therapeutic evaluation of autoimmune diseases.