Objective To investigate the computed tomography (CT) features of autoimmune pancreatitis (AIP).Methods The CT imaging data of 33 patients with AIP confirmed by pathology and/or steroid therapy were retrospectively analyzed.Image analysis including the shape of pancreas, density of lesion, contrast enhancement, the changes of pancreatic duct and biliary duct, peripancreatic appearances and adjacent organ involvement.T test was performed for statistical analysis.Results Among 33 patients with AIP, 23 cases (70%) with pancreatic parenchyma diffuse enlargement, eight cases (24%) with partial enlargement and two cases (6%) with normal pancreas.The lesions appeared hypoattenuating or isoattenuating on plain CT scan.After contrast-enhanced scan, the average CT values of lesions were (75.7±17.0) Hu at arterial phase, which was lower than that of venous phase (90.7±12.0) Hu, and the difference was statistically significant (t=3.378,P=0.002).The lesions demonstrated as progressive enhancement at venous phase.Among 33 patients, the main pancreatic duct was visible in six patients (18%).Sixteen patients (48%) presented with intrahepatic and extrahepatic biliary tract dilatation caused by intrapancreatic common bile duct stenosis.Thickened envelope-like structure around the lesions, presenting as capsule sign was seen in 14 patients (42%).Extra-pancreatic organ involvement was found in seven patients including three cases of kidney involvement.After treated with steroid, seven patients repeated CT which showed different degrees of improvement.Conclusion The main CT findings of AIP are diffuse and partial enlargement of pancreas with progressive enhancement at venous phase, envelope-like structure around pancreas, and stenosis of intrapancreatic common bile duct, which are important in the diagnosis and differential diagnosis of AIP.

Objective To evaluate the response of the lung tumor xenografts in nude mice to antiangiogenic treatment from perspectives of anatomic,vessel function,cellular and molecular level using the multimodality imaging techniques including optical imaging,dynamic contrast enhanced MRI(DCE-MRI)and diffusion weighted imaging(DWI).Methods The green fluorescent protein(GFP)was transplanted labeled using GFP-expressing NCI-H460 cells.After the transfection of GFP,NCI-H460 cells were implanted subcutaneously into nude mice.Ten days after implantion,12 nude mice whose tumor xenografts grew to 0.5-1.0 cm in the maximum diameter were randomly divided into 2 groups,and injected with phosphate-buffered saline and recombinant human endostatin respectively.Then the nude mice in the two groups underwent optical imaging,DCE-MRI and DWI.The volumes,photon counts,the quantitative MR vessel functional parameters including volume transfer constant(Ktrans),rate constant(Kep),volume of extravascular extracellular space(Ve)and maximum area under the enhancement curve(iAUC),and apparent diffusion coefficient(ADC)values of the tumors were recorded.Then tumors were collected and observed using the transmission electron microscopy and pathology examination,including HE staining,microvessel density(MVD)and the expressions of vascular endothelial cell growth factor(VEGF).The Kep and VEGF expressions in experimental group and control group were compared with x2 text,and other values were compared with t test.The Pearson and Spearman test were used for analyzing the correlation of values in the two groups.Results Seven days after inoculation,the fluorescence signals were detected and grew with the growth of the tumors.On the 7 day after starting therapy,the photon counts of experimental group and control group were(2.51 ± 2.43)× 1010(photon/sec)and(5.77 ± 3.25)× 1010(photon/sec),respectively with no significant differences(t =1.964,P ＞0.05).Two sample t test showed that the tumor volumes in experimental group were smaller than those in control group[(365 ± 56)vs(987 ± 265)mm3,t =0.001,P ＜ 0.01].There was a positive correlation(r =0.673,P ＜ 0.05)between the photon counts and the volumes of the tumors.The mean Ktrans,Kep,Ve and iAUC of experimental group were:(0.055 ±0.012)min-1,0.335(0.184—0.894)min-1,0.297 ± 0.041 and 7.334 ± 3.930,and those for control group were:(0.117 ± 0.027)rin-1,0.417(0.324-1.736)min-1,0.326:±:0.062 and 13.280 ± 4.245.There were significant differences of Krans and iAUC(t =5.155,2.518,P ＜ 0.05)between experimental group and control group.And there was a positive correlation(r =0.715,P ＜ 0.0 1)between the values of iAUC and MVD,but not the expressions of VEGF(r =0.484,P ＞ 0.05).The values of ADC in experimental group were higher than that in control group[(791 ± 38)× 10-6 vs(737 ± 43)×10-6 mm2/s],and there were significant differences(t =-2.299,P ＜ 0.05).Two sample t test showed that the MVD in experimental group were lower than that in control group[(11.9 ± 4.8)vs(19.2 ±4.3)item/hpf,t =2.774,P ＜ 0.05].The VEGF expressions in experimental group were lower than that in control group(x2 =4.000,P ＞ 0.05).It was observed that some cells in experimental group had degenerated and apoptotic signs by the electron microscopy.Conclusions Evaluating the response of lung tumor xenografts to antiangiogenic treatment at anatomical,vessel functional,cellular and molecular level using the multimedality imagings is applicable.And it will be in favour of evaluating the therapeutic effect promptly.

Objective To evaluate the diagnostic performance of plasma miR-499 in acute myocardial infarction (AMI) diagnosis.Methods Diagnostic accuracy test.The suspected AMI patients,who with chest pain for more than half an hour and been admitted in the Second People's Hospital of Wuxi and First People's Hospital of chuzhou during October 2010 and July 2011,were consecutively and prospectively enrolled in the present study.Sixty apparently healthy individuals were designed as healthy control.The plasma samples of the suspected AMI patients were collected within two hours after admission.The plasma miR-499 was determined by real time polymerase chain reaction (RT-PCR).The diagnostic performance of plasma miR-499 for AMI was estimated by receiver operating characteristic (ROC) curve analysis.The association between plasma miR-499 and AMI was analyzed by multivariable logistic model.The plasma miR-499 was determined and explained in blind fashion.Results Two hundred and nine suspected AMI patients,including 131 confirmed AMI patients (46 STEMI and 85 NSTEMI) and 78 AMI free patients were enrolled in the present study.The delta cycle threshold (ΔCT) was 1.01 ± 3.34 for AMI patients,-2.76 ± 2.90 for non-AMI patients and-3.79 ± 2.21 for healthy controls.The differences had statistical significance (x2 =96.77,P ＜ 0.01).The area under curve (AUC) of plasma miR-499 was 0.80 (95％ C I:0.74-0.86),lower than that of cardiac troponin Ⅰ (AUC =0.90,95％ CI:0.86-0.94) on admission (P ＜0.01).At the optimal cut-off of 0.18,the diagnostic sensitivity and specificity were 0.69 (95％ CI:0.61-0.77) and 0.77 (95％ CI:0.66-0.86),respectively.The coefficient of correlation between plasma miR-499 and cTnI was 0.72 (P ＜0.01).The odds ratio (OR) of plasma miR-499 ＞0.18 for AMI was 2.59 (95％ CI:1.10-6.07),after adjusted cTnI.Conclusions Plasma miR-499 is a useful biomarker for AMI diagnosis.It can provide additional diagnostic information beyond cTnI.Combination utility of plasma miR-499 and cTnI may improve the diagnostic accuracy for AMI.

Objective To explore the influence of life quality for the breast cancer patients receiving chemotherapy after the cog-nitive ,behavioral and psychological intervention to their spouse .Methods 120 breast cancer patients received standardized chemo-therapy and their spouses ,and divided into control and intervention groups .The intervention group receive the routine care and health guidance .Before and after chemotherapy ,the life quality of patients was investigated .The data was analyzed statistically .Re-sults The result by the breast cancer patients Quality of Life Questionnaire in Chinese (FACT-B) show that ,the scores of the con-trol and intervention groups in the physiological status ,social/family status ,emotional status ,functional status ,additional attention andtotalscorewere(18.77±4.18,16.48±4.60,17.35±4.41,16.04±4.80,20.81±6.02,89.45±6.34 ;22.46±3.57,19.03± 4 .83 ,18 .58 ± 3 .96 ,18 .59 ± 4 .48 ,24 .73 ± 5 .63 ,103 .39 ± 8 .91) .The scores of intervention groups was increased significantly than the control group .The data was analyzed statistically .Conclusion The quality of life of patients was improved by the cognitive ,be-havioral and psychological guidance and intervention to the spouse of breast cancer chemotherapy patients.

Objective:To investigate the nutritional status of elderly inpatients in China, and to assess its relationship with clinical outcomes.Methods:A prospective, multicenter, parallel investigation was organized and conducted by the Chinese Medical Association's Group of Geriatric Nutrition Support.Patients aged ≥65 years from 30 major hospitals of 14 cities in China were evaluated by the Nutritional Risk Screening 2002(NRS2002)and the Mini-Nutritional Assessment-Short Form(MNA-SF), in order to understand the nutritional status and nutritional risk of elderly inpatients in China.The indicators of clinical outcomes were summarized, and the correlation between nutritional status and clinical outcomes was analyzed.Results:A total of 10 184 elderly patients who met the inclusion criteria were enrolled in this study, aged 65-112(74.81±7.01)years, with a body mass index(BMI)of 17.80-35.50(23.32±3.83)kg/m 2.Grip strength of the dominant hand was(16.95±18.42)kg, upper arm circumference was(25.68±3.70)cm, and calf circumference was(32.07±3.89)cm.BMI, grip strength, upper arm circumference and calf circumference decreased significantly with age( F=13.74, 97.47, 28.31 and 88.68, all P<0.001). NRS2002 was conducted on 10 182 patients.Of them, 10.14%(895/10 182)suffered malnutrition(BMI≤18.5 kg/m 2), and 46.42%(4 726/10 182)were at nutritional risk(NRS2002 score≥3). Nutrition deficiency and nutritional risk showed upward trends with age( F=43.41 and 177.05, both P<0.001). A total of 9 755 patients(95.79%, 9 755/10 182)completed the MNA-SF.Of them, 14.67%(1 431/9 755)had malnutrition, 35.04%(3 418/9 755)were at risk of malnutrition, and 50.29%(4 906/9 755)had normal nutritional status.The incidence of malnutrition and the risk of malnutrition significantly increased with age( F=172.79, 12.10 and 152.42, all P<0.05). Nutritional risk(NRS2002 score≥3)was related to age, BMI, mortality, infectious complications, length of hospital stay and total hospital cost(all P<0.05). Conclusions:The incidence of malnutrition and the risk of malnutrition are high in elderly inpatients in China.Nutritional risk is an influencing factor for adverse clinical outcomes.

Objective　To investigate the protective effect of complement C5a receptor 1 (C5aR1) antagonist on cerebral ischemia-reperfusion （CIR） in mice.Method　Mice were randomly divided into sham operation group,cerebral ischemia-reperfusion group (model group) and C5aR1 antagonist （PMX53）group.At 3 h before,24 h after and 48 h after cerebral reperfusion timepoint,the PMX53 group was given with PMX53,the sham group and the model group were given same volume of saline by intraperitoneall injection.At 72 h after cerebral reperfusion timepoint,neurological deficits score of mice were evaluated by the modified Longa method,the infarcted brain volume was calculated after TTC staining,the cerebral tissue water content of the ischemic hemisphere was calculated by dry and wet weight method,the mRNA expression of inflammatory factors in the ischemic hemisphere were detected by real-time PCR,and the relative expression of ZO-1 in cerebral tissue of the ischemic hemisphere was calculated by Western blot.Results　At 72 h after cerebral reperfusion,compared with the model group,neurological deficits function score,cerebral water content,cerebral infarction volume and inflammatory cytokines (IL-1β,TNF-α) were significantly decreased in the PMX53 group (all P<0.05),ZO-1 expression was significantly higher in the PMX53 group (P<0.05).Conclusion　C5aR1 antagonist can improve the neurological function score after CIR,reduce the volume of cerebral infarction,reduce the degree of cerebral edema and inflammatory response,and has a protective effect on the blood-brain barrier.

Objective:To evaluate the diagnostic efficacy of contrast enhanced computed tomography (CT) at early arterial phase and late arterial phase for detecting pancreatic carcinoma with small liver metastases (<1 cm).Methods:The enhanced CT data of 93 patients with pathologically confirmed pancreatic carcinoma admitted in the First Affiliated Hospital of Nanjing Medical University were retrospectively analyzed. The patients were randomly divided into the early arterial phase group (47 patients with the early arterial phase and portal venous phase scanning) and the late arterial phase group (46 patients with the late arterial phase and portal venous phase scanning) according to random number method. Number, maximum diameter, enhancement features of small liver metastases in two groups were observed. The receiver operating characteristic curve (ROC) was drawn and the area under the curve was calculated. The accuracy, sensitivity, specificity, positive predictive value, and negative predictive value were also evaluated.Results:In the early arterial phase group, 21 of 47 patients had 28 small liver metastases with the maximum diameter of (7.33±1.40)mm. And in the late arterial phase group, 20 of 46 patients had 29 small liver metastases with the maximum diameter of (7.69±1.67)mm. There was not significantly statistical difference between the two groups ( P>0.05). Small liver metastases were more likely to present rim enhancement at the late arterial phase (69.0%). The area under curve of ROC of diagnostic performance in the early and late arterial phase were 0.657(95% CI 0.531-0.782), 0.810(95% CI 0.672-0.947), respectively. For the early phase group, the accuracy, sensitivity, specificity, positive predictive value, and negative predictive value were 68.1%, 61.9%, 75.0%, 88.5%, 42.9%, respectively. The accuracy, sensitivity, specificity, positive predictive value, and negative predictive value in the late group were 82.6%, 65.7%, 100%, 100%, 75.8%, respectively. Compared with the early arterial phase group, the late arterial phase group showed higher performance in detecting small liver metastases. Conclusions:Enhanced CT at the late arterial phase improves the detection of small liver metastases in patients with pancreatic carcinoma, aiding in accurate staging preoperatively.

We report one case of unilateral breast cancer treated with contralateral prophylactic mastectomy simultaneously and confirmed pathologically as synchronous bilateral primary breast carcinoma.The clinical characterization and diagnosis of bilateral primary breast cancer combined with a review of literature were discussed to serve as a reference for early diagnosis and treatment of the disease.

Objective: To study the effect of color Doppler ultrasound (CDUS) combined with serum glucoside antigen 125 (CA125) on the diagnostic efficacy of patients with ovarian cancer. Methods: A total of 78 patients with ovarian tumors admitted to our hospital from February 2012 to June 2018 were enrolled. Among them, 38 patients with malignant tumors and 40 patients with benign tumors were tested for CDUS and serum CA125. The characteristics of CDUS images and serum CA125 levels in patients with malignant tumors were analyzed by pathological examination as the gold standard. The diagnostic efficacy of CDUS combined with serum CA125 level detection and separate examination was analyzed. Results: ⑴ Characteristics of CDUS images: the size, location, texture, blood flow signal, resistance index, ascites, peritoneal implant nodule or enlarged lymph node of patients with malignant tumors were significantly different from those of benign tumors (P<0.05). ⑵ Serum CA125 level: the serum CA125 level of patients with malignant tumors was higher than that of patients with benign tumors (P<0.05). ⑶ Diagnostic results: among 78 patients with ovarian tumors, 33 cases of malignant tumors were detected by serum CA125, 45 cases of benign tumors, of which 5 cases were misdiagnosed, and 10 cases were missed. For example, CDUS detected 35 malignant tumors and 43 benign tumors, of which 6 were misdiagnosed and 9 were missed. A total of 43 malignant tumors and 35 benign tumors were detected, of which 6 were misdiagnosed and 1 was missed. ⑷ Diagnostic efficacy: the accuracy of CDUS combined with serum CA125 level detection (91.03%) was higher than that of the two groups (80.77% and 80.77%), but the difference was not statistically significant (P>0.05); the sensitivity of CDUS combined with serum CA125 level detection was 97.37%. The two were independently examined by 76.32% and 73.68% (P<0.05). The specificity of CDUS combined with serum CA125 was 85.00%, with no significant difference between the two groups (80.05%, 87.50%) (P>0.05). Conclusions The serum CA125 level of patients with ovarian cancer is abnormally elevated. The characteristics of CDUS images are different from those of benign tumors, which can effectively identify benign and malignant tumors. CDUS combined with serum CA125 level detection can significantly improve the diagnostic efficacy, and they can be used to judge the disease and symptom , and provide guidance for treatment and prognosis assessment.

Objective To investigate the change of the nutritional status of elderly patients in Chinese major hospitals dynamically with nutritional risk screening 2002 (NRS 2002) and subjective global assessment (SGA) during hospitalization.Methods A prospective,multi-center survey was conducted on over 65 years old patients who were admitted in departments of gastroenterology,respiratory medicine,general surgery,geriatrics,thoracic surgery,neurology,orthopedics and medical oncology of 9 large hospitals in China for 7-30 days between June 2014 and September 2014.On admission and within 24 hours after discharge,the clinical data were recorded,physical indices were measured,and laboratory examination were conducted.NRS 2002 and SGA were used to make an evaluation.The nutritional supports and clinical outcomes were also recorded and then the correlation between nutritional status and clinical outcomes were analyzed.Results A total of 2558 patients above 65 years old were included into the study.Compared with their status on admission,their grip strength,upper arm circumference and crural circumference were reduced significantly at discharge (P＜0.05).The total protein,albumin and hemoglobin levels were significantly lower than those on admission (P＜0.05).The incidence of nutritional risk (NRS 2002 score ≥ 3) and malnutrition (SGA B + C) on admission were lower than those at discharge (51.1％ vs 53.0％,32.6％ vs 35.6％).The hospitalization time and medical expenses were higher in patients with malnutrition on admission than in those with normal nutrition intakes.The nutritional status at discharge was negatively correlated with hospitalization time and medical expenses.61.3％ patients having nutritional risk did not take nutritional support during the hospital stay,while utilization rate of parenteral nutrition was higher than that of enteral nutrition in patients receiving nutritional support (19.6％ vs 11.9％).Conclusion Elderly patients have higher possibilities of facing nutritional risk or malnutrition on admission,these are associated with poor clinical outcomes and their nutritional status will not improve significantly at discharge.Therefore,the screening and evaluation of nutritional status in elderly patients during hospitalization should be conducted and their nutritional intervention should be standardized so as to improve the clinical outcomes.