Objective To improve the diagnostic accuracy by analyzing the computed tomography ( CT) characteristic performance of mucoepidermoid carcinoma of the lung. Methods CT findings 15 cases proved by pathology of mucoepidermoid carcinoma of the lung were retrospectively analyzed,and CT characteristic performance were studied by reviewing the literatures. Results The mucoepidermoid carcino-ma were located in right bronchial of 8 cases,left bronchial of 6 cases,peripheral part of the lung of 1 case. Calcification was seen in 7 mas-ses. Most masses density was not homogeneous at plain scanning. Venous phase have significantly enhanced compared with arterial phase. Ten cases showed obstructive pneumonia and atelectasis,3 cases with mediastinal lymph node metastases. Conclusion Multiple mucoepidermoid carcinoma of the lung grows extension of the long axis of bronchial,calcification be seen in most of patients. The enhanced mode of the lesions appeared as continuous progressive enhancement,some were illustrated with post obstructive pneumonia or atelectasis,CT have a certain value of diagnosis and diffenertial diagnosis.

Objective To explore the relationship between 5-minute Apgar score and heart rate variability (HRV) in severely asphyxiated neonates. Methods A total of 103 severely asphyxiated neonates with 1-minute Apgar score of 0 to 3 points were selected. They were divided into Group A (>7 points, n=50) and Group B (≤7 points, n=53) based on 5-minute Apgar score. Meanwhile, 40 full-term neonates with 1-and 5-minute Apgar score greater than 7 points were selected as control group. 24-hour dynamic electrocardiogram was performed and HRV was analyzed on the third day after birth in three groups. Results PNN50, rMSSD, SDSD were decreased and SDNN, SDANN were increased in group B as compared with group A and control group (P<0.05). No signiifcant difference of HRV was observed between group A and control group (P>0.05). Conclusions Neonatal asphyxia can cause damage to autonomic nervous system. 5-minute Apgar score and HRV can be joint-ly used as a non-invasive index in autonomic nervous damage and its prognosis in asphyxiated newborns.

Objective To evaluate the clinical value of color Doppler ultrasound (CDUS) and computed tomography angiography (CTA) in diagnosis of Budd-Chiari syndrome(BCS).Methods The CDUS and CTA data about 33 BCS patients diagnosed by digital subtraction angiography(DSA) and treated by interventional therapy were retrospectively analyzed.All of 33 patients with BCS were examined with CDUS,26 cases of then received CTA.The diagnostic value of BCS between two methods were compared.Results The diagnostic accordance rate of CDUS and CTA for BCS were 90.9％ and 96.2％ respectively,which had no significant statistical difference(P ＞ 0.05).The two methods could not only comprehensively systematically reflect the morphologic changes of liver and spleen,the stenosis and blood flow state of the lesion regions,but also clearly display the intrahepatic/extrahepatic collateral vessels trend in the abdomen.One week after interventional therapy,the CUDS results showed blood vessels pristine and stable hemodynamics.Conclusion CDUS is the preferred imaging in the diagnosis and postoperative re-examination of BCS.While,CTA can provide many important parameters for preoperative assessment and operation way.

Objective To investigate the effect of taurine on colonic fibrosis in rats with colitis induced by 2,4,6-trinitrobenzene sulphonic acid(TNBS). Methods Thirty-two SD rats were divided into normal control group, model group, low-dose (400 mg/kg) taurine group and high-dose (800 mg/kg) taurine group. Rats in normal group were administrated with 0.9% NaCl solution enema, and the other three groups received TNBS enema. The rats in low-dose and high-dose taurine groups were administrated with 400 mg/kg and 800 mg/kg of taurine daily, respectively, one week before TNBS enema. Morphology and disease activity index (DAI) were evaluated, and the colonic tissues were histologically examined. Colon length and weight of the rats were also measured. The concentrations of hydroxyproline, collagen type Ⅰ, transforming growth factor-betal(TGF-β1), and Smad3 protein and mRNA in colon tissues were tested. Results In comparison with control group, the body weight and colon length were decreased while DAI score and colon weight were increased obviously in model group (P`0.01). All above parameters were improved after intervention of taurine. The fibrotie score in model group (1.88±0.35) was significantly higher than that in control group (0.25±0.46), low-dose (1.25±0.71) and high-dose (0.75±0.47) taurine groups (all P values <0.05). High levels of hydroxyproline, collagen type Ⅰ, TGF-β1 and Smad3 were detected in model group compared with low-dose and high-dose taurine groups (all P values < 0.05). Conclusions Taurine is effective in prevention of colonic fibrosis induced by TNBS in rats, which is mediated by the down regulation of TGF-β1 and the inhibition of TGF-β/ Smad3 pathway. It may be beneficial in treatment of Crohn's disease with colonic fibrosis and strictures.

Objective To evaluate the CT and MRI imaging features of primary ventricular lymphoma ,so as to provide a reference for the diagnosis and differential diagnosis of the disease .Methods The clinical data and imaging findings of primary ventricular lymphoma in one case was retrospectively analyzed with literature review and compared with primary lymphoma in parenchymal brain .Results Slightly high density tumor presented with regular shape in the trigone of lateral ventricles on CT findings , and slightly low signal intensity on T 1 and slightly high signal intensity on T 2 appeared on MRI findings with small cystic necrosis in tumour .An enhancement scan showed obviously enriched, and there was perilesional edema.After 14 day’s dehydration treatment, rechecked indicated that the lesions were significantly en-larged, the shape were irregula , the area of cystic necrosis was enlarged , heterogeneous enhanced scanning were enhanced , perilesional ede-ma became more heavier , and the imaging feature of “closed fist” appeared .It was proved to be diffuse large B cell lymphoma with surgical pathologic examination , and there was no lymphoma in other regions of the body with whole body PET-CT examination , which was clinically diagnosed as primary ventricular lymphoma .Conclusion Primary ventricular lymphoma is rarely reported ,and it has similar imaging mani-festations with primary lymphoma in parenchymal brain .The combination of multiple imaging modalities will be helpful to diagnosis and dif -ferential diagnosis for the suspected patients .

Objective:To investigate the effect of pancreaticojejunostomy on the occurrence of postoperative pancreatic fistula (POPF) after pancreaticoduodenectomy. Methods:Data from 145 patients with periampullary tumor who underwent pancreaticoduode-nectomy in Tianjin Medical University Cancer Institute and Hospital between October 2008 and August 2013 were reviewed. Factors potentially associated with POPF were analyzed by Pearson chi-square test and Logistic regression analysis. Results:Among the 145 patients, 27 were diagnosed with POPF, including 5 grade A, 17 grade B and 5 grade C. Neither duct to mucosa nor Blumgart pancreati-cojejunostomy was correlated with POPF in grade C. The univariate analysis showed that gender, pancreatic cancer, portal vein involve-ment, type of pancreaticojejunostomy, texture of pancreas, and diameter of the main pancreatic duct were closely correlated with POPF. The multivariate analysis using Logistic regression showed that different pancreaticojejunal anastomoses and genders were independent predictors of POPF. Conclusion:Different types of pancreatic anastomoses are a risk factor for POPF after pancreaticoduodenectomy.

Objective To estimate the effect and the intracellular signal transduction pathway of insulin-like growth factor I (IGF-I) on the expression of stem cell factor(SCF) in colonic smooth-muscle cells(SMC). Methods The SMCs isolated from colon of the SD rats by enzymolysis were cultured and identified by α-actin immunocytochemical method. Colonic SMCs were cultured either with 100 μg/L of IGF-I at different time points (0, 8, 16, 24 and 48 hours) or with different concentrations (0,5,10,50,100 and 150 μg/L) of IGF-I for 16 hours. The expressions of SCF in colonic SMCs pretreated with or without speicific phosphatidylinositol 3-kinase (PI 3-kinase) inhibitor LY-294002 or mitogen-activated protein (MAP) kinase (MEK1) inhibitor PD-98059 were examined by Western blotting and quantitative reverse transeription-polymerase chain reaction and immunofluorescence. Results Low expression of SCF was found in colonic SMCs cultured in the bovine serum free medium. There was no effect of 5 or 10 μg/L of IGF- I on the expression of SCF. However, the expressions of SCF mRNA and protein were increased when stimulated with high concentrations (50,100,150 μg/L) of IGF-I. The peak expression of SCF was showed at the 16th hour after stimulating with 100 μg/L of IGF- I that was considered as the most effective concentration in vitro. The expression of SCF was not influenced by LY-294002, but was partly blocked by PD-98059. Conclusions The expression of SCF in colon SMCs may be induced by IGF-Ⅰ through MAP kinase signaling pathway.

Objective Benign childhood epilepsy with centrotemporal spikes (BECT) is the most common partial epilepsy syndrome in children, and responds well to carbamazepine (CBZ), oxcarbazepine (OXC), and valproic acid (VPA). The aim of this study is to investigate the therapeutic effect of OXC on BECT. Methods We retrospectively discussed a case of partial epilepsy in a 6-year-old boy with no abnormality on neuroradiologic examination. Results The patient′s seizures were easily controlled by administration of OXC, but electroencephalography (EEG) identified deterioration of the EEG features following the introduction of OXC monotherapy. Then OXC was gradually decreased in dose and substituted with VPA. When VPA was increased to the dose of 0.5g/d, the boy had no more seizures and exhibited normal EEG in the conscious state. Conclusion OXC may induce new types of seizure and aggravate EEG features although it is considered to be the first-line anti-epileptic drug (AED) and much better tolerated than either phenytoin or CBZ.

Objective To assess the sequence variations in preS/S regions of occult hepatitis B virus (OHB) and their relationship to severe chronic hepatic injury. MethodsWe collected samples from HBsAg negative patients, and evaluated their HBV-DNA by nest-PCR. HBV-DNA positive samples were used for analysis of preS/S region by PCR sequencing. Results Sixty-nine cases with HBV-DNA were identified in 468 cases without HBsAg. The positive percents were 16％, 8.7％, 36.4％, 18.3％ and 0％in group of only HBcAb positive, only HBeAb positive, only HBeAg positive, both HBcAb and HBsAb positive and all indexes negative, respectively. The level of HBV-DNA of OHB was significant lower than that in HBsAg positive patients. Compared with HBsAg positive controls, preS/S deletion, M1I and Q2K in preS2 region, Q129N/R/P,G185R and S210R in S region were more common in OHB. Moreover, M1I and Q2K in preS2 region, G185R and S210R in S region in OHB with severe chronic hepatic injury were more common that those in OHB without severe chronic hepatic injury. Compared with HBsAg positive patients with severe chronic hepatic injury, the level of HBV-DNA was lower, while the frequency of M1I and Q2K mutation in preS2 region, G185R and S210R in S region were more common in OHB patients with severe chronic hepatic injury. ConclusionThe virological factors were different between OHB and HBsAg positive patients. The M1I and Q2K in preS2 region, G185R and S210R in S region might be useful for prognosis evaluation of OHB patients.

Objective: Our aim was to study the role of telomerase activation in the course of cervical carcinogenesis and progression.Methods:Telomeric repeat amplification protocol(TRAP) assay was used to measure telomerase activity in tissue samples with various cervical conditions:40 with cervical cancer, 50 with cervical intraepithelial neoplasia(CIN), 20 with normal cervice. Results:The positive rate of telomerase activity was 95.0%,44.0%, and 10.0% in cervical cancer, CIN, and normal cervices, respectively, which was significantly higher in cervical cancer than that in CIN and normal cervices, so was that in CIN than that in normal cervices (P<0.01) . The positive rate was 22.2%, 37.5%, and 75.0% in CINⅠ,Ⅱ, and Ⅲ, respectively, which was significantly higher in CINⅢ than that in CIN Ⅱand CINⅠ (P<0.01).Conclusion:Telomerase activation may relate to cervical carcinogenesis, which correlates well with the grade of cervical lesions.