Objective:To report the pituitary sella MRI appearances,clinical symptoms and treatment of primary hypothyroidism in 7 cases,in order to improve the recognition of the pituitary sella MRI appearances,especially the MRI appearances of pituitary caused by the primary hypothyroidism,and to avoid misdiagnosis.Methods:The pituitary sella MRI appearances,clinical symptoms and clinical treatment in the primary hypothyroidism in those 7 cases were analyzed.Results:Features of the pituitary sella MRI appearances in those 7 cases:The pituitary increased in size,which appeared like the tumor in extreme.The MRI appearances of the superior carina were intermediate signal intensity,and the posterior lobe of the pituitary,with an obvious enhancement after Gd-DTPA administration,which was compressed by its anterior lobe,were high signal intensity;other MRI features included enlargement of the sella turcica,invasion of its adjacent bones and opticus nervus,and bad development of sphenoid sinus,etc.With T3,T4 decreasing and TSH markedly increasing that was measured by clinical laboratory examination,7 young children with hypothyroidism visited doctor due to a short stature,but their condition had been improved after an anti-hypothyroidism therapy for 1～ 3 months.The MRI features after treatment:The pituitary reduced largely in size.Conclusion:The primary hypothyroidism,with typical clinical symptoms,stimulates the pituitary that grows abnormally by the feedback regulation;it’s highly recommended to pay attention to clinical symptoms and laboratory examination so as to avoid misdiagnosis when the Cerebral MRI appearances mainly shows that the pituitary enlarges abnormally.

Objective:Toreport the MRI characteristics and clinical manifestation in 3 cases ofprimaryintracranial hypotension syndrome(PIH)and put forward the main points in its diagnosis and examination.Methods:The MRI characteristics and clinical manifestation in 3 cases diagnosed as PIH were retrospectively analyzed.Results:The brain MRI found diffuse pachymeningeal gadolinium enhancement in 2 cases,downward displacement of amygdala cerebelli and narrowing of pontine cistern and cisterna magna in 1 case.In 2 cases by spinal cord MRI,subarachnoid cavity became narrow in multi-series and multi-aspect scanning and it's boundary became unclear;one was located on T5～T7level and the other on T8～T9level;epidural collection of fluid showed strip or comma shape.All the 3 cases had lower CSF pressure(

Objective To analyze the MRI features of senile endometrial polyp and compared MRI features with pathological find-ings,to improve the ability for the diagnosis.Methods The study included 58 cases with senile endometrial polyp proved by diag-nostic curettage or hysterectomy.MRI and pathological findings were analyzed retrospectively.Results Among 58 cases,there were 46 cases with and 12 cases without uterine cavity enlargement.Lesion combined solid portions with cryptomere cystics areas filled in uterine cavity in 35 cases,and MRI showed hypointensity on T1 WI,mixed intensity with hypointensity separation lines on T2 WI, and marked heterogeneous enhancement.The signal of uterine cavity was heterogeneous in 23 cases with hypointensity or isointensi-ty on T1 WI,hyperintensity or isointensity on T2 WI,and no obviously enhancement.Conclusion MRI combined with clinical fea-tures can improve the diagnostic accuracy of senile endometrial polyp.

Objective To explore the value of 64-row helical CT multi-phase enhancement scan combined with angiography (CTA)in the diagnosis of pulmonary mass.Methods Two hundred and sixty-five patients with pulmonary mass confirmed by pa-thology were checked,analyzed the CT sign of multi-phase enhancement scan and the blood supply of pulmonary mass displayed by CTA.Results Lung cancer was mainly supplied by bronchial arteries,some by body arteries,the feeding arteries display rate of lung cancer group was significantly higher than that of benign disease group(P <0.05).CT enhancement peak value of lung cancer group was significantly higher than that of tuberculoma group,inflammatory pseudotumor group and hamartoma group(P <0.05), but no significant difference between hemanginoma group(P >0.05).Enhancement dynamic curves of lung cancer group was differ-ent from benign lesion groups:Lung cancer without obvious enhancement in pulmonary artery phase,CT value increased rapidly in aorta phase,120 s reached peak,and declined slowly in delay phase;CT value of tuberculoma was increased slowly without obvious peak;CT value of inflammatory increased gradually in pulmonary artery phase,90 s reached the peak;hamartoma was no obvious enhancement;Hemangioma enhanced rapidly after strengthening in the pulmonary artery phase,reached the peak at about 15 s,and then decreased slowly.Conclusion 64-row helical CT multi-phase enhancement scan combined with angiography have important clinical value,which can differentiate malignant mass from benign ones.

Objective To evaluate the feasibility of wholeGtumor texture analysis of contrastGenhanced T1 WI (T1 Ce)in differentiating cystic glioma (CG)from brain abscess (BA).Methods MRI data of 25 cases of ringGenhanced CG and 24 cases of BA proven pathologically were retrospectively studied.All the patients underwent preGsurgery MRI plain and contrastGenhanced scans.FireVoxel software was used to outline the ROI of the wholeGtumor.The signal intensity histogram and related texture parameters of the 3D ROI were obtained,including mean, median,standard deviation,inhomogeneity,skewness,kurtosis and entropy.The data were first tested for normality and the differences in wholeG tumor texture analysis parameters of T1 Ce between CGs and BAs were compared using the independentGsample t test(normal distribution)and MannGWhitney rank sum test (skewed distribution).ROC curve was used to evaluate the efficacy of the parameter in differentiating CG from BA.Results There were statistical significances in the parameters of mean,median,standard deviation,inhomogeneity and skewness between CGs and BAs(P＜0.05),and there were no any statistical significances in kurtosis and entropy between CGs and BAs(P＞0.05).In all the texture parameters,the AUC of inhomogeneity was the largest(0.988),and when the threshold was 0.314, the sensitivity and the specificity were 92.60% and 9 7.1 0%,respectively.Conclusion Some of the quantitative parameters of the wholeGtumor texture analysis of T1 Ce(mean,median,standard deviation,inhomogeneity and skewness)could provide reliable and objective evidences for imaging differential diagnosis of CG and BA preGsurgery.

The purpose of the present work is to establish an ultra-minimal invasive percutaneous puncture inoculation method for a VX2 orthotopic lung cancer rabbit model with fewer technical difficulties, lower mortality of rabbits, a higher success rate and a shorter operation time, to evaluate the growth, metastasis and apoptosis of tumor by CT scans, necropsy, histological examination, flow cytometry and immunohistochemistry. The average inoculation time was 10–15 min per rabbit. The tumor-bearing rate was 100%. More than 90% of the tumor-bearing rabbits showed local solitary tumor with 2–10 mm diameters after two weeks post-inoculation, and the rate of chest seeding was only 8.3% (2/24). The tumors diameters increased to 4–16 mm, and irregularly short thorns were observed 3 weeks after inoculation. Five weeks post-inoculation, the liquefaction necrosis and a cavity developed, and the size of tumor grew further. Before natural death, the CT images showed that the tumors spread to the chest. The flow cytometry and immunohistochemistry indicated that there was less apoptosis in VX2 orthotopic lung cancer rabbit model compared to chemotherapy drug treatment group. Minimal invasive percutaneous puncture inoculation is an easy, fast and accurate method to establish the VX2 orthotopic lung cancer rabbit model, an ideal in situ tumor model similar to human malignant tumor growth.
Apoptosis ; Drug Therapy ; Flow Cytometry ; Humans ; Immunohistochemistry ; Lung Neoplasms* ; Lung* ; Methods* ; Mortality ; Necrosis ; Neoplasm Metastasis ; Punctures* ; Rabbits ; Thorax ; Tomography, X-Ray Computed

Objective To investigate the effects of parenteral nutrition with ω-3 fatty acids on nutrition,inflammatory response,immunity and prognosis in criticallyill cancer patients.Methods 60 critically ill cancer patients were randomly divided into study group and the control group,30 cases each.All Patients were given isonitrogen and isocalorie enteral and parenteral nutrition for 2 weeks,which added ω-3 fatty acids in the study group by parenteral nutrition.The indicators of nutrition,inflammation,immune function were detected weekly.prognostic indicators (mortality,intensive care unit [ICU] length of stay,infectious complications) were compared.Results The indicators of nutrition,inflammatory reaction and immune function of study group were significantly improved than control group,and length of stay in ICU of study group was shorter than control group.There were less mortality and morbidity of infection complications in the study group compared with control group,but difference were not significant (P =0.13 and P=0.165).Conclusion ω-3 fatty acids supplementation of parenteral nutrition in critically ill cancer patients can improve nutritional status and immune function,reduce inflammatory response,shorten ICU length of stay,but not significantly improve ICU mortality and reduce infectious complications.

OBJECTIVETo assess the levels of polycyclic aromatic hydrocarbons monohydroxy metabolites in urine of general population in China among 8 provinces, provide the baseline of the metabolites in the general population.

METHODSFrom 2009 to 2010, 18 120 subjects of general population aged 6-60 years old were recruited from 24 areas among 8 provinces in east, west and central areas of China mainland by cluster random sampling. The information of the living environment and health condition were collected by questionnaire and spot urine samples were collected, 4 680 urine samples were analysed by high performance liquid chromatography with tandem mass spectrometry, and monohydroxy metabolites distribution in urine among groups of gender and ages were analysed.

RESULTSGeometric means (GM) of 2-naphthol, 1-naphthol, 3-phenanthrol and 1-hydroxypyrene concentration in urine (95%CI) were 1.85 (1.75-1.95), 1.55 (1.50-1.61), 0.57 (0.54-0.59) and 0.82 (0.78-0.85) µg/L, respectively;and median are 2.44, <0.50, 0.72 and 0.90 µg/L, respectively. The concentration between male and female were significantly different (P < 0.01), and the concentration among the groups of population were significantly different (P < 0.01), the GM of 2-naphthol among the groups of population aged 6-12, 13-16, 17-20, 21-30, 31-45 and 46-60 years old were 1.60, 1.56, 1.69, 2.23, 1.91 and 1.86 µg/L (χ(2) = 17.90, P < 0.01), the GM of 1-naphthol in the groups were 1.30, 1.16, 1.53, 1.68, 1.80 and 1.52 µg/L (χ(2) = 76.22, P < 0.01), the GM of 3-phenanthrol in the groups were 0.78, 0.76, 0.55, 0.42, 0.50 and 0.99 µg/L (χ(2) = 66.48, P < 0.01), the GM of 1-hydroxypyrene in the groups were 0.77,0.64, 1.00, 0.84, 0.84 and 0.57 µg/L (χ(2) = 51.48, P < 0.01), respectively.

CONCLUSIONThe distribution of monohydroxy metabolites levels in urine of general population were different, it provided a basic data for the further study of polycyclic aromatic hydrocarbons biomonitoring in the population.

Adolescent ; Adult ; Child ; China ; epidemiology ; Cross-Sectional Studies ; Environmental Exposure ; Female ; Humans ; Male ; Middle Aged ; Naphthols ; urine ; Polycyclic Aromatic Hydrocarbons ; urine ; Pyrenes ; urine ; Sentinel Surveillance ; Young Adult

OBJECTIVETo investigate the level of zinc (Zn) and copper (Cu) in whole blood among general population from 8 provinces in China, and to analyze the characteristics of distribution among different regions.

METHODSThis cross-sectional study was performed in 8 provinces from eastern, middle and western China between 2009 and 2010, including 13 110 subjects from 24 regions, and the blood and urine samples were collected. The ICP-MS was applied to test the content of ICP-MS in blood samples, and the results were used to analyze the characteristics of contents and distributions of Zn and Cu among population from different ages, genders and regions groups.

RESULTSTotally, the mean (95%CI) contents of Cu and Zn in blood were 795 (791-799)µg/L and 3 996(3 976-4 015) µg/L, respectively. The characteristics of distribution of Cu content were as followed, the content of males were lower than it of females (male:767 µg/L; female: 822 µg/L, t = -13.302, P < 0.01). The contents of blood Cu in groups of people aging 6-12, 13-16, 17-20, 21-30, 31-45 and 46-60 years old were separately 860(853-868), 758(748-769), 734(728-734), 782(774-790), 811(795-827) and 820(815-826) µg/L. The differences showed statistical significance (F = 78.77, P < 0.01). The blood Cu content of people in eastern China (800µg/L) were also significantly higher than it in middle (774 µg/L)and western China (782 µg/L) (F = 10.94, P < 0.01). Distribution of blood Zn content showed characteristics as follows: the Zn content was higher in males than in females (male 4 085 µg/L and female 3 908 µg/L, t = 8.78, P < 0.01). The contents of blood Zn in groups of people aging 6-12, 13-16, 17-20, 21-30, 31-45 and 46-60 years old were separately 3 306 (3 261-3 350), 3 888 (3 839-3 937), 3 948 (3 902-3 994), 4 272(4 228-4 315), 4 231(4 180-4 281) and 4 250 (4 205-4 294)µg/L, which showed significant statistical differences (F = 233.68, P < 0.01). The blood Zn content of people in eastern China (3 938 µg/L) were significantly lower than it in middle (4 237 µg/L)and western China (4 105 µg/L) (F = 53.16, P < 0.01). In addition, the study also compared the relation between content of Cu and Zn and the frequency of eating seafood. The results found that the frequency of eating seafood could influence the content of Cu and Zn (Cu: F = 13.54, P < 0.01; Zn: F = 200.20, P < 0.01).

CONCLUSIONThe contents and distributions of Cu and Zn in blood differs among people from different groups in ages, genders and regions. The baseline data of this study provided reliable scientific evidence for further research.

Adolescent ; Adult ; Child ; China ; epidemiology ; Copper ; blood ; Cross-Sectional Studies ; Female ; Humans ; Male ; Middle Aged ; Young Adult ; Zinc ; blood

OBJECTIVETo evaluated the levels of arsenic (As) in blood and urine among general population in China and analyze its influencing factors.

METHODSA total of 18 120 subjects from general population aged 6-60 years were recruited from 24 districts in 8 provinces in eastern, central and western China mainland from 2009 to 2010, by cluster random sampling method. Blood samples and urine samples were collected, the information of the life-style was collected by questionnaire.Inductive coupled plasma mass spectrometry was applied to test the As level in the samples, and the distribution of As in blood and urine for different ages, genders, areas and life habits were then analyzed.

RESULTSThe geometric mean (GM) of blood As concentration among general population was 2.33 µg/L;the GM of blood As in male (2.35 µg/L) was higher than and female (2.30 µg/L) (Z = -1.42, P < 0.05); from eastern, central to western China, the blood As level were 2.94, 1.30 and 0.98 µg/L (χ(2) = 643.22, P < 0.05) , respectively; the GM in smokers (2.84 µg/L) was higher than non-smokers (2.27) (Z = -6.28, P < 0.05) ;the seafood consumer had a higher blood As level (2.59 µg/L) than people not consuming seafood (1.47 µg/L) (Z = -23.68, P < 0.05). The urine As level of the whole population was 13.72 µg/L;while its GM in male (14.10 µg/L) was higher than female (13.33 µg/L) (Z = -3.94, P < 0.05); the values from eastern, central to western China were 14.14, 16.02 and 9.57 µg/L (χ(2) = 353.89, P < 0.05), respectively;the level in smokers (16.06 µg/L) was higher than nonsmokers (13.70 µg/L) (Z = -2.63, P < 0.05); the level in seafood consumers (14.82 µg/L) was higher than people not consuming seafood (10.99 µg/L) (Z = -3.20, P < 0.05). The blood As level had a positive correlation with urine As level (correlation coefficient:0.285, P < 0.05).

CONCLUSIONThe As level in blood and urine varied by gender and area among general population in China, and related to life-styles. There was a positive correlation between As level in blood and that in urine.

Adolescent ; Adult ; Arsenic ; blood ; urine ; Child ; China ; epidemiology ; Cross-Sectional Studies ; Environmental Exposure ; Female ; Humans ; Male ; Middle Aged ; Sentinel Surveillance ; Young Adult