Stromal cells are the important part of the bone marrow microenvironment. They provide a suitable environment for the self-renewal, proliferation and differentiation of the hematopoietic stem cells. Stromal cells include dendritic cells, macrophages, fibroblasts, endothelial cells and adipocytes. They secrete cytokines,extracellular matrix and provide direct cellular contaction to regulate hematopoiesis. Dysfunction of the stromal cells will lead to all kinds of hemopathy and immune system diseases directly.

OBJECTIVE To describe the sonographic features of carotid body tumor(CBT), and determine the utility of ultrasonography as a diagnostic study in the preoperative patients. METHODS Sonograms of 60 patients with 65 CBT were reviewed with gray scale and duplex Doppler sonography. The evaluated features included the location, size, margins, shape, internal echogenicity, the relationship between the tumor and the carotid artery,and blood flow velocity. RESULTS All carotid body tumors were located at the carotid artery bifurcation. Well-defined, solid, weakly hypoechoic masses were noted on gray scale sonography in the carotid bifurcation. Color Doppler sonography showed hypervascularity in 61 masses. Pulsed Doppler analysis of blood flow within the tumor mass was possible in 61 CBT, and low-resistance waveforms were obtained from multiple sites within the mass in all cases. CONCLUSION The ultrasound characteristics of the CBT possess specificity to some extent. Duplex Doppler ultrasound can provide the relationship between the tumor and the carotid artery,and provide important information of intratumor blood flow,which has important value in the diagnosis of CBT.

Motivational interviewing was a consultation model which centered on patients, and changed patients′unhealthy behaviors by changing their motivations, and promoting their health. Motivational interviewing had been widely used in improving the capacities of patients′self-management with chronic diseases in abroad. Through reviewing the application in chronic disease self-management of motivational interviewing at home and abroad, the paper pointed out the prospect and problems that needed to be solved in our country and provided references for further research on motivational interviewing in self-management of chronic diseases.

Child ; Coronary Aneurysm ; diagnostic imaging ; physiopathology ; Coronary Thrombosis ; diagnostic imaging ; physiopathology ; Coronary Vessels ; diagnostic imaging ; physiopathology ; Female ; Humans ; Mucocutaneous Lymph Node Syndrome ; complications ; diagnosis ; diagnostic imaging ; physiopathology ; Ultrasonography, Doppler

Objective To evaluate the value of 18F-FDG PET/CT in histological grading and staging of follicular lymphoma (FL) and prediction of prognosis after first-line treatment.Methods From May 2007 to April 2013,24 patients (11 males,13 females; median age 55 years) with histopathological proof of FL were retrospectively studied.All patients were evaluated by 18F-FDG PET/CT before the first-line treatment and were divided into indolent FL and aggressive FL according to their histological grades and clinical stages.The sensitivity,specificity and SUVmax were calculated.Analysis of variance of factorial design was used to analyze the data.Within the same study period,18F-FDG PET/CT was also performed in 16 FL patients (9 males,7 females; median age 50.5 years) after first-line treatment (7/16 patients belonged to the aforementioned group with pretreatment PET/CT performed) ; and they were then divided into PET/CTpositive and PET/CT-negative groups.All 16 patients were followed for 6-49 months to evaluate the prognosis.The rates of overall survival (OS) and progression-free survival (PFS) were calculated.Results (1)The sensitivities of PET/CT in indolent and aggressive FL were 92.3％ (12/13) and 100％ (11/11),respectively.The SUVmax was 5.26± 1.70 vs 9.54±5.09 (F=5.196,P＜0.05).(2) According to PET/CT,3patients(12.5％,3/24) were upstaged from Ⅰ-Ⅱ to Ⅲ-Ⅳ,and 2 patients(8.3％,2/24) were downstaged from Ⅲ-Ⅳ to Ⅰ-Ⅱ.The SUVmax of stage Ⅰ-Ⅱ and Ⅲ-Ⅳ FL was 5.22±2.92 and 8.04±4.46(F=2.904,P＞0.05).(3)For the 16 FL patients with PET/CT after first-line treatment,the negative and positive groups had different OS and PFS.The 6-month OS,1-year OS and 3-year OS were 100％(13/13),9/9,4/5,respectively for the negative group,and 2/3,2/3,1/2,respectively for the positive group; while the corresponding 6-month PFS,1-year PFS and 3-year PFS were 92.3 ％ (12/13),8/9,3/5 and 2/3,0/3,0/2,respectively.Conclusions 18F-FDG PET/CT is valuable in the evaluation of histological grading and clinical staging of FL patients and in the prediction of prognosis after fist-line treatment.

Objective To analyze ultrasonic elastography (UE) score of breast carcinoma and to explore the correlation between UE and pathological collagen content in stroma.Methods UE scores of 60 breast carcinoma before operation were retrospectively studied.The correlation between the UE scores and the pathological collagen content grading in stroma after operation were analyzed.Results UE score of 60 breast carcinoma were (4.07 ± 0.78) scores,the diagnosis coincidence rate of UE score was 80.0％ (48/60).Positive correlation existed between UE score and the pathological collagen content grading in stroma of breast carcinoma (r =0.440,P =0.015).Conclusion UE score of breast carcinoma is related to the pathological collagen content in stroma,and it can evaluate collagen content in stroma of breast masses in some degree.

Objective To evaluate the reproducibility of quality intima-media thickness(QIMT) and quality arterial stiffness (QAS) technique in assessment of carotid under different measuring methods.Methods Between December 2012 and January 2014,carotid QIMT and QAS examinations were carried out in 30 health volunteers.QIMT and QAS indicators included IMT in QIMT and distensibility coefficient (DC),compliance coefficient(CC),stiffness index α(α),stiffness index β(β),pulse wave velocity(PWV) in QAS.The measurement employed unilateral/once,bilateral/twice,and unilateral/twice methods.Using intra observer and inter-observer variability,the reproducibility was compared between different QIMT and QAS indicators and measuring methods.Results Extremely high level of intra-observer reproducibility was found for both QIMT and QAS technique (ICC＞0.8).QIMT also showed an excellent inter observer reproducibility (ICC＞0.8).In contrast,the reproducibility of QAS technique varied in different indicators (PWV ＞ β ≈ α ＞ CC ＞ DC) and method ( unilateral/once ＞ bilateral/twice ＞ unilateral/twice).Conclusions QIMT measurement was highly reproducible.Whereas the reproducibility of QAS technique varied in different indicators and methods.Due to low reproducibility,the study result did not support the clinical application of DC indicator and unilateral/once method.

Objective To study the preparation method of magnetic fluids and its antitumor effect in combination with paclitaxel thermo-chemotherapy in vitro. Methods Magnetic fluids were prepared by copre-cipitation and modified by sodium oleate. Transmission electron microscopy, Fourier infrared spectroscopy and other instruments were used to characterize the products. The heat effect was studied under ahemating magnetic field in vitro. MTT assay was performed to examine the effect of magnetic fluids in combination with pachtaxel thermo-chemotherapy of human cervical cancer cells Caski. Results The prepared magnetic fluids were global with a diameter of 20～30 nm,Zeta potential was -11 mVto -16 mV. They had distinct heat effect in a alterna-ting magnetic field and could rise to a temperature for tumor thermo-chemotherapy (41 ～ 46℃). Thermo-ehem-otherapy could significantly inhibit the proliferation and promote of the Caski cells, which were more distinct than the magnetic fluids hyperthermia and paclitaxel chemotherapy. Conclusion Magnetic fluids in combina-tion with paclitaxel thermo-chemotherapy has advantages of chemotherapy and hyperthermia. This treatment shows better effects on cell experiments than that of using paclitaxel chemotherapy alone and may provide a new way in clinical treatment for human cervical cancer.

Objective To explore the biomechanical characteristics of the pharynx in patients with aspiration after radiotherapy for nasopharyngeal carcinoma (NPC).Methods Clinical data on NPC patients with dysphagia admitted between July 2011 and June 2015 were retrospectively analyzed.Twenty-three patients were found who had received videofluoroscopic swallowing studies (VFSSs) and whose pharyngeal pressure and upper esophageal sphincter (UES) relaxing were tested using high-resolution solid-state manometry (HRM).The cases were divided into an aspiration group and a non-aspiration group according to the VFSS results.Differences in biomechanical parameters between the 2 groups when taking food of different viscosity were compared.Results Patients with aspiration had significantly higher UES residual pressure when taking thick liquids (20.1± 14.3 mmHg) and paste (18.0± 14.3 mmHg) than patients not aspirating (9.3±9.2 mmHg and 7.2±8.9 mmHg for thick liquid and paste respectively).But no significant difference in average pharyngeal pressure between the two groups was observed.Conclusion Aspiration after radiotherapy may be correlated with increased UES residual pressure.

Objective To evaluate the accuracy and feasibility of 64-slice spiral CT (64SCT) in assessing coronary artery disease.Methods A total of 30 suspected patients (male 21 cases, female 9 cases, and mean age of 54.6 years) were undergone both 64SCT and selective coronary angiography (SCA). Volume redering (VR) ,multiplanar reconstruction (MPR), maximum intensity projection (MIP) and transverse section were reconstructed. The results of coronary reconstructions were compared with SCA to analyze the accuracy of the 64SCT in detecting coronary artery stenoses.Results In the 396 segments of coronary artery(diameter≥2 mm)of 30 patients, 385 were judged to be evaluable by 64SCT. The evaluable rate was 97.2%. The sensitivity, specificity, positive predictive value and negative predictive value of the 64SCT in detecting coronary artery stenoses(≥50% of stenosis) were 96.22%, 94.56%, 89.44% and 96.88%. The accuracy rate of 64SCT in detecting ≥50% stenosis of coronary artery was 95.90%.Conclusion 64SCT has high accuracy in detecting coronary artery stenoses, as a noninvasive method,it can be used for screening patients with known or coronary artery diseases.