Objective To assess the value of functional magnetic resonance urography (fMRU)for the unilateral renal function in children with hydronephrosis.Methods Fourteen children with congenital hydronephrosis (unilateral hydronephrosis in 1 2 cases,bilateral hydronephrosis in 2 cases)examined by fMRU in Beijing Children′s Hospital,Capital Medical University,were enrolled.In 7 patients of them,diuretic renal scintigraphy (DRS)was per-formed within 1 0 days before fMRU examination.The following parameters in fMRU,as renal parenchymal volume,volu-metric differential renal function (vDRF),Patlak,Patlak differential renal function (pDRF),index of glomerular filtra-tion rate (GFR)and differential renal function based on index of GFR (gDRF),were calculated and analyzed.Statisti-cal analysis was performed by using SPSS 1 3.0.Results In 7 cases whose fMRU and DRS were examined,the indexes of GFR obtained from fMRU and GFR from DRS were well correlated (r =0.892,P <0.001 )in 1 4 kidneys.The gDRF determined by 2 methods on the left kidneys[the average was(46.80 ±1 9.20)% and(45.1 8 ±20.29)%,respective-ly]had no significant difference (t =0.051 6,P =0.624),which was also highly correlated (r =0.91 2,P =0.004). In 1 2 cases with unilateral hydronephrosis,vDRF,pDRF,index of GFR and gDRF in hydronephrotic side[(43.54 ± 9.61 )%,(42.80 ±1 0.83)%,(38.56 ±29.23)mL/min,(38.37 ±1 3.61 )%]were all less than those in the con-tralateral side[(56.46 ±9.61 )%,(57.1 9 ±1 0.83)%,(57.02 ±26.22)mL/min,(61 .63 ±1 3.61 )%](t =2.326, 2.300,2.422,2.960;P =0.040,0.042,0.034,0.01 3).However,there was no statistical difference in both renal pa-renchymal volume and Patlak between the hydronephrotic and the contralateral side kidneys(t =1 .765,1 .450;P =0.1 05,0.1 75).Conclusions fMRU is a very valuable examination method in evaluating single kidney function in children with congenital hydronephrosis,and able to demonstrate that gDRF,indexes of GFR,vDRF and pDRF decrease in the hydronephrotic kidney.

Objective To discuss MRI manifestations of overlap syndrome of autoimmune liver diseases and the diagnostic value of the MRI .Methods Seven patients of overlap syndrome of autoimmune liver diseases were recruited .The MRI examination (inclu‐ding T1WI ,T2WI ,DWI and MRCP )were underwent on these patients .MR features of overlap syndrome were reviewed by two ra‐diologists by consensus .Two radiologists independently reviewed the studies in a blinded fashion .Results AIH/PBC 4 cases ,AIH/PSC 1 case ,PBC/PSC 1 case ,AIH/PBC/PSC 1 case was collected .MRI of AIH/PBC has the MRI feature of AIH and PBC .MRI of AIH/PSC has the MRI feature of AIH and PSC .MRI of PBC/PSC has the MRI feature of PBC and PSC .MRI feature of AIH/PBC/PSC has the MRI feature of AIH ,PBC and PSC .Conclusion If the patients who sufferd autoimmune liver diseases displayed the MIR images of other autoimmune liver diseases ,the patients were considered that had developed into overlap syndrome of autoim‐mune liver diseases .

Objective:To investigate the impact of different type of dyslipidemia on clinical and pathological characteristics in children with IgA nephropathy (IgAN).Methods:A retrospective study was performed at the Children Kidney Disease Center, the First Affiliated Hospital of Sun Yat-sen University between January 2006 to September 2019. Children diagnosed with primary IgAN was divided into dyslipidemia group and normal blood lipid group according to whether the blood lipid is normal, and was divided into the following four groups: hypercholesterolemia group, hypertriglyceridemia group, mixed hyperlipidemia group and low high-density lipoprotein cholesterol (HDL-C) group according to clinical classification. The clinical and pathological features in different groups were analyzed, and the risk factors of dyslipidemia were analyzed by using multivariate logistic regression analysis.Results:A total of 252 children with IgAN were enrolled in this study, including 169 males and 83 females, with a male/female ratio of 2.04∶1 and an age of (9.3±3.1) years. Among them, 34.5% IgAN children were complicated with hypertension, and 170 cases (67.5%) were in dyslipidemia group, 82 cases (32.5%) in normal blood lipid group. According to clinical classification, the children in dyslipidemia group were divided into hypercholesterolemia group (58 cases, 23.0%), hypertriglyceridemia group (16 cases, 6.3%), mixed hyperlipidemia group (77 cases, 30.6%) and low HDL-C group (19 cases, 7.5%). The systolic blood pressure, diastolic blood pressure, proportion of hypertension, blood urea nitrogen, uric acid and urinary protein in dyslipidemia group were higher than those in normal blood lipid group (all P<0.05), and the levels of serum albumin, blood IgA and estimated glomerular filtration rate (eGFR) were less (all P<0.05). The proportion of IgAN children in chronic kidney disease (CKD) stage 1 and CKD stage 2-5 with dyslipidemia was 65.0% and 84.4% respectively, and the proportion of IgAN children with CKD stage 2-5 in dyslipidemia group was higher than that in normal group ( P<0.05). The dyslipidemia group had a higher proportion of Lee Ⅲ-V grade than normal blood lipid group ( P<0.01). The results of Oxford pathological classification showed that the proportions of M1 and E1 in dyslipidemia group were higher than those in normal lipid group (all P<0.05), and there was no significant difference in segmental glomerulosclerosis, tubular atrophy or interstitial fibrosis and crescent between the two groups (all P>0.05). The comparison results between groups with different types of dyslipidemia showed that systolic blood pressure, diastolic blood pressure, serum uric acid and urinary protein in the mixed hyperlipidemia group were higher than those in other groups (all P<0.05), and the serum albumin level was less ( P<0.01). The results of Oxford pathological classification showed that the proportion of E1 in hypercholesterolemia group and mixed hyperlipidemia group was higher ( P<0.05). Multivariate logistic regression analysis showed that hypertension ( OR=2.734, 95% CI 1.327-5.632, P=0.006) and low serum albumin ( OR=0.838, 95% CI 0.791-0.889, P<0.001) were the risk factors of dyslipidemia in children with IgAN. Conclusions:In our center, 67.5% IgAN children are accompanied by dyslipidemia. The clinical manifestations and pathological changes of these dyslipidemia children are more severe than those with normal blood lipid, and the IgAN children with mixed hyperlipidemia are more notable. Hypertension and low serum albumin are the risk factors of dyslipidemia in children with IgAN.

Objective:To investigate the expression, prognostic value and potential mechanism for the role of SNHG4 in gastric cancer.Methods:The expression of SNHG4 in gastric cancer was analyzed by UALCAN database. The relationship between SNHG4 and prognosis of gastric cancer was analyzed by Kaplan-Meier Plotter. SNHG4-miRNA-mRNA regulatory network was constructed by StarBase, Targetscan, microT-CDS and Cytoscape. The target genes were analysis GO and KEGG pathway enrichment by DAVID database.Results:The expression of SNHG4 in gastric cancer was significantly higher than that in normal tissues ( P=8.882E-16) . The overall survival time of patients with high SNHG4 expression was lower than that of patients with low expression ( P=8.900E-05) . Through the construction of RNA regulatory network, we found that hsa-let-7a-5p ( P=1.02E-03) , hsa-miR-152-3p ( P=4.51E-06) , hsa-miR-204-5p ( P=6.68E-04) and hsa-miR-363-3p ( P=8.06E-03) could be used as the binding sites of SNHG4 in gastric cancer, and these four miRNAs further regulated 250 downstream target genes. Through GO and KEGG enrichment analysis of the target genes, we found that these target genes played roles in the biological process of protein phosphorylation regulation, transcription negative regulation, RNA polymerase II promoter transcription, and participated in the occurrence and development of gastric cancer by blocking or activating Wnt and other signal pathways. Conclusions:SNHG4 can be used as a potential tumor marker for gastric cancer to judge the prognosis of gastric cancer. By constructing a SNHG4-miRNA-mRNA regulatory network, the pathogenesis of gastric cancer can be studied at the molecular level. This provides a clear direction for experimental and clinical research.

Objective To establish a clinical-CT model,and to observe its value for evaluating lymphovascular invasion(LVI)and/or perineural invasion(PNI)in esophageal squamous cell carcinoma(ESCC).Methods Data of 156 ESCC patients were retrospectively analyzed.The patients were divided into positive group(n=58,LVI[+]and/or PNI[+])and negative group(n=98,LVI[-]and PNI[-])according to postoperative pathological results.Clinical and CT data were compared between groups.Logistic regression analysis was performed to establish a model,and its efficacy of evaluating ESCC LVI and/or PNI was analyzed.Results Significant differences of carcinoembryonic antigen(CEA),carbohydrate antigen 199(CA199),tumor thickness,tumor volume and CT venous phase value(CTV),the difference between CTV and CT plain phase value(CTP)(△CTV-P)and venous phase enhancement rate(V％)were found between groups(all P＜0.05),and the area under the curve(AUC)of the above parameters for evaluating ESCC LVI and/or PNI was 0.702,0.690,0.731,0.744,0.621,0.631 and 0.599,respectively.CEA,CA199,tumor thickness,tumor volume and CTV were all independent predictive factors for ESCC LVI and/or PNI.A combined model was established based on the above features,and its accuracy,sensitivity and specificity for evaluating ESCC LVI and/or PNI was 82.05％,65.52％and 91.84％,respectively,with AUC of 0.838,higher than that of each single parameter(all P＜0.05).Conclusion The established clinical-CT model could effectively evaluate ESCC LVI and/or PNI.

Primary splenic angiosarcoma is a rare highly malignant hematologic neoplasms. Based on the combination of PET/CT diagnosis of primary splenic angiosarcoma: 1 case was analyzed. The diagnosis and treatment of primary splenic angiosarcoma and the diagnostic significance of PET/CT in this disease were studied.