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We researched the mechanism of African swine fever virus (ASFV) protein E248R in regulating the cGAS-STING pathway. First, we verified via the dual-luciferase reporter assay system that E248R protein inhibited the secretion of IFN-β induced by cGAS-STING or HT-DNA in a dose-dependent manner. The relative quantitative PCR analysis indicated that the overexpression of E248R inhibited HT-DNA-induced transcription of IFN-b1, RANTES, IL-6, and TNF-α in PK-15 cells. Next, we found that E248R interacted with STING by co-immunoprecipitation assay and laser confocal microscopy. Finally, we demonstrated that E248R inhibited the expression of STING protein by using Western blotting. We demonstrated for the first time that the E248R protein of ASFV suppressed the host innate immune response via inhibiting STING expression. The results are pivotal in extending the understanding of the ASFV immune escape and can guide the design of vaccines against ASFV.
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Animais , Vírus da Febre Suína Africana/genética , DNA , Imunidade Inata , Nucleotidiltransferases/metabolismo , Transdução de Sinais , SuínosRESUMO
Objective@#To investigate the prognostic value of the maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV) and total lesion glycolysis (TLG) measured by pretreatment 18F-FDG PET-CT in patients with stage Ⅲ~Ⅳ diffuse large B-cell lymphoma (DLBCL).@*Methods@#Clinical data of 72 DLBCL patients with stage Ⅲ~Ⅳ disease undergoing a pretreatment PET-CT scan were retrospectively analyzed. SUVmax, MTV and TLG values of whole-body tumor were calculated from PET-CT images with a threshold of SUVmax 40% of tumor tissues. The optimal cutoff lines of SUVmax, MTV and TLG were obtained by ROC curve analysis. The Kaplan-Meier method and Log-rank test were used to perform univariate survival analysis, while Cox proportional hazards model was done for multivariate analysis.@*Results@#The SUVmax, MTV and TLG of 72 patients were 21.64, 139.48 cm3 and 1 413.77, respectively. The areas under the ROC curve (AUC) of SUVmax, MTV and TLG were 0.411 (95%CI=0.279~0.544, P=0.195), 0.688 (95%CI=0.566~0.811, P=0.006) and 0.526 (95%CI= 0.469~0.672, P=0.123), respectively. The median SUVmax (21.64) and TLG(1 413.77) were used as the cutoff lines due to smaller AUC. The cutoff point of MTV was 69.71 cm3. For DLBCL patients of stage Ⅲ~Ⅳ disease, univariate analysis showed that SUVmax and TLG were not associated with the progression-free survival (PFS) and overall survival (OS) (P>0.05 for all). Multivariate analysis showed that National Comprehensive Cancer Network International Prognostic Index (NCCN-IPI) but not MTV was the independent prognostic predictor of PFS and OS (P<0.05 for all). And MTV was not the independent prognostic factor of PFS and OS for stage Ⅲ DLBCL (P>0.05 for all).@*Conclusions@#For DLBCL patients with stage Ⅲ~Ⅳ disease, the prognostic value of SUVmax, MTV and TLG before treatment initiation are undetermined, and these indices cannot be used to predict the prognosis.
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Objective@#To investigate the value of maximum Standardized Uptake Value(SUVmax), Metabolic Tumor Volume (MTV) and Total Lesion Glycolysis (TLG) calculated from 18F-FDG PET-CT in predicting the presence of epidermal growth factor receptor (EGFR) mutations in lung adenocarcinoma.@*Methods@#We retrospectively reviewed 137 lung adenocarcinoma patients with EGFR mutations testing and pretreatment 18F-FDG PET-CT. Receiver Operating Characteristic (ROC) curve analysis was performed to quantify the predictive value of SUVmax、MTV、TLG. A multivariate logistic regression analysis was used to evaluate the predictive value of EGFR mutation.@*Results@#Among 137 lung adenocarcinoma patients, 86(62.8%, 86/137) were identified with EGFR mutations. The SUVmax, MTV and TLG were 7.4, 5.28 cm3, 20.20, respectively. The optimal cut-off values of SUVmax, MTV and TLG were 7.99(AUC=0.658, 95% CI=0.566~0.752, P=0.002), 6.09 cm3(AUC=0.644, 95% CI=0.550~0.737, P=0.005), 35.08(AUC=0.650, 95% CI= 0.557~0.744, P=0.003), respectively. Multivariate analysis showed that TLG and smoking status were the most significant predictors of EGFR mutation(all P<0.05).@*Conclusion@#TLG in 18F-FDG PET/CT is an independent factor for predicting EGFR mutation in patients with lung adenocarcinoma, and has certain reference value for predicting EGFR mutation.
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Objective To investigate the clinicopathologic features of intestinal polypoid lymphoma (PL) in children. Methods The clinicopathologic data of 15 cases of pediatric intestinal PL in Jiangxi Provincial Children 's Hospital were retrospectively analyzed. Immuohistochemistry was used to detect the expressions of CD10, bcl-6, bcl-2, MUMl and ERCC1, then EB virus (EBV)-encoded RNA (EBER) status was tested by using in situ hybridization. Results Amongst 15 cases studied, 13 cases were Burkitt lymphoma (BL), 1 case was diffuse large B-cell lymphoma (DLBCL) and 1 case was between DLBCL and BL (DLBCL/BL). The positive rate of CD10, bcl-6, bcl-2, MUMl, ERCC1 and EBER were 100.0%(13/13), 92.3%(12/13), 0, 7.7 % (1/13), 15.4 % (2/13), 53.8 % (7/13), respectively in 13 BL cases. The clinical stage of 13 patients with BL: 11 cases (84.6 %) Ⅱ stage, 1 case (7.7 %) Ⅲ stage, 1 case (7.7 %) Ⅳstage. The clinical stage of DLBCL and BL/DLBCL: Ⅱstage. 14 cases of PL had survival time without tumors, 24-120 months follow-up, and 1 BL patient inⅣstage without chemotherapy died after 2 months. Conclusion BL is a major subtype of intestinal PL in children, which shows a low clinical stage and a good prognosis.
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Objective To investigate the prognostic value of SUVmax , SUVmean , MTV and TLG cal-culated from 18 F-FDG PET/CT in patients with postoperative esophageal cancer. Methods Sixty-one pa-tients ( 51 males, 10 females;age ranged 50-81 ( median:64) years) with esophageal cancer who under-went preoperative 18 F-FDG PET/CT from October 2007 to November 2015 were retrospectively analyzed. The relation of SUVmax , SUVmean , MTV and TLG in primary lesions with clinic pathological factors was ana-lyzed. Differences of metabolic parameters were compared with two-sample t test, one-way analysis of vari-ance, Mann-Whitney u test or Kruskal-Wallis H test. The optimal cutoff points of SUVmax , SUVmean , MTV and TLG for predicting overall survival ( OS) were investigated by ROC curve analysis. The Kaplan-Meier method and log-rank test were used to perform univariate survival analysis, and Cox proportional hazards model was used for multivariate analysis. Results MTV and TLG were associated with tumor length, N stage and clinical stage, while SUVmax and SUVmean were only associated with tumor length ( t=-2.396, F=4.206, 4. 471;z=-3.051,χ2=8.908, 9.796;t=-2.417,-2.423;all P<0. 05) . The optimal cutoff points of SUVmax, SUVmean, MTV and TLG were 11.76, 7.06, 24.35 cm3 and 166. 84 g, respectively. Univariate analysis of OS showed that the lymphatic metastasis, clinical stage and TLG were all significantly associated with the patient outcome (χ2=14.683, 7.139, 11.669, all P<0.05) . Multivariate analysis showed that lym-phatic metastasis and TLG were the independent predictors for OS (β=-1. 472, -1. 223; Wald=5. 224, 4. 668;both P<0.05) . Conclusion For predicting the prognosis of esophageal cancer after operation, TLG of the primary tumor may be more valuable than SUVmax , SUVmean and MTV.
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Objective To investigate the prognostic value of SUVmax , SUVmean , MTV and TLG cal-culated from 18 F-FDG PET/CT in patients with postoperative esophageal cancer. Methods Sixty-one pa-tients ( 51 males, 10 females;age ranged 50-81 ( median:64) years) with esophageal cancer who under-went preoperative 18 F-FDG PET/CT from October 2007 to November 2015 were retrospectively analyzed. The relation of SUVmax , SUVmean , MTV and TLG in primary lesions with clinic pathological factors was ana-lyzed. Differences of metabolic parameters were compared with two-sample t test, one-way analysis of vari-ance, Mann-Whitney u test or Kruskal-Wallis H test. The optimal cutoff points of SUVmax , SUVmean , MTV and TLG for predicting overall survival ( OS) were investigated by ROC curve analysis. The Kaplan-Meier method and log-rank test were used to perform univariate survival analysis, and Cox proportional hazards model was used for multivariate analysis. Results MTV and TLG were associated with tumor length, N stage and clinical stage, while SUVmax and SUVmean were only associated with tumor length ( t=-2.396, F=4.206, 4. 471;z=-3.051,χ2=8.908, 9.796;t=-2.417,-2.423;all P<0. 05) . The optimal cutoff points of SUVmax, SUVmean, MTV and TLG were 11.76, 7.06, 24.35 cm3 and 166. 84 g, respectively. Univariate analysis of OS showed that the lymphatic metastasis, clinical stage and TLG were all significantly associated with the patient outcome (χ2=14.683, 7.139, 11.669, all P<0.05) . Multivariate analysis showed that lym-phatic metastasis and TLG were the independent predictors for OS (β=-1. 472, -1. 223; Wald=5. 224, 4. 668;both P<0.05) . Conclusion For predicting the prognosis of esophageal cancer after operation, TLG of the primary tumor may be more valuable than SUVmax , SUVmean and MTV.
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Objective By studying clinical features, treatment and prognosis of eosinophilic gastroenteritis of infants resulted from milk protein allergy an, to improve the diagnosis and treatment level of eosinophilic gastroenteritis. Methods 24 cases of infants which diagnosed eosinophilic gastroenteritis were chosen from June of 2010 to January of 2014 in children’s Hospital of XX province and By retrospective analysis clinical manifestations, endoscopic features, histopathology, treatment and prognosis of the 24 cases. Results The 24 cases who were vomiting, paroxysmal crying, abdominal distension (100.00%), which accompanied by haematemesis 23 cases (95.83%), 1case (4.17%) hematochezia, 17cases (70.83%) eczema, 21 cases (87.50%) mild to moderate anemia, 1 cases (4.17%) severe anemia, 19 cases (79.17%) the increasing of peripheral blood eosinophil cells, 8 cases (33.33%)the increasing of IgE of the serum and 4 cases (16.67%) the test of antibody of the Helicobacter pylori in Serum was positive; 3 cases (12.50%) were milk protein allergy by the detecting of food allergen-speciifc IgE antibodies, the endoscopic characteristics were hyperemia, edema, erosion, ulcer of gastric and duodenal mucosa. Among them, 24 cases (100.00%) were gastritis, 5 cases (20.83%) duodenitis and 1 cases (4.17%) duodenal ulcer. The histopathology of the 24 cases revealed that there were gastric or duodenal eosinophils infiltration (> 20/HPF) and were all associated with mast cell infiltration; By antisecretory, protection of the gastrointestinal mucosa and the obviating of milk protein had a satisfactory treatment effect, 24 cases of children with oral general formula milk test conifrmed that the milk protein allergy, The 3 cases of the patients were reviewed by 8~12 weeks after gastroscope, and the mucosa of the duodenum was smooth, Eosinophils were/HPF<8, mast cells were/HPF<5. Conclusion There are no speciifc clinical and endoscopic manifestations in eosinophilic gastroenteritis of infants resulted from milk protein allergy, gastrointestinal mucosa eosinophil inifltration and simultaneously are accompanied by abnormal mast cell inifltration;Mucosal type without the use of corticosteroids, through milk protein avoidance treatment can achieve satisfactory results, But definite diagnosis must rely on biopsy and eosinophils, combined with avoidance stimulation test of milk protein can further confirmed, But the excitation test should be at least 10 days of observation of children, and carefully recorded symptoms, so as not to delay the missed diagnosis of CMPA.
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A simple colorimetric method for detection of isocarbophos was developed based on the enhanced peroxidase-like activity of hemin. Hemin could catalyze the oxidation of peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB) by H2O2, which made TMB to lose one electron and caused reaction solution color changing from initial transparent to blue-green. Adding isocarbophos improved hemin affinity to substrates, which further enhanced peroxidase-like activity of hemin and made TMB to lose two electrons. The color of TMB solution was further changed from blue-green to yellow, and the degree of color change was proportional to the concentration of isocarbophos. Under the optimal conditions, the present analytical method for isocarbophos detection had a dynamic range from 2 μg/L to 100 μg/L with a detection limit of 1.2 μg/L (3σ). The selectivity assay demonstrated that other organophosphorus pesticides exhibited negligible interferences for isocarbophos detection. The application of the proposed method in the practical samples showed that the mean recovery of isocarbophos was in the range of 94.4％-113.0％, thus it could be widely applied to rapidly and sensitively detect isocarbophos in the agricultural products.
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Objective To investigate the correlation between serum biochemical parameters and Parkinson's disease (PD) risk in the elderly.Methods The 277 inpatients with PD as PD group in Jiangsu Province Hospital from January 2009 to December 2013 were selected,at the same time,the 277 age and gender-matched healthy persons were enrolled as control group.The levels of total cholesterol (TG),total bilirubin (TB),uric acid (UA),low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) were detected and compared between the two groups.Results The levels of TG,UA,TB,HDL-C and LDL-C were significantly lower in PD group than in control group [(4.35±1.13) mmol/L vs.(4.95±0.98) mmol/L,t=6.63;(278.00± 101.89)μmol/L vs.(380.90 ± 108.28) μmol/L,t =12.44;(13.02 ± 7.56) μmol/L vs.(17.39 ± 7.30)μmol/L,t=7.09;(1.26±0.37) mmol/L vs.(1.34±0.28) mmol/L,t=3.38;(2.59±0.79) mmol/L vs.(3.17±0.91) mmol/L,t=7.42,all P＜0.05].Logistic multiple regression analysis showed that the decreased levels of TB,UA and LDL-C were independently associated with prevalence risk of PD (OR=0.940,0.991 and 0.219,all P＜0.001).The combined score of TB,UA and LDL-C was constructed by using the linear weighted method.ROC curve was drawn to select the higher diagnostic validity index among TB,UA,LDL-C and combined score.The area under the ROC curve for TB,UA,LDL-C and combined score was 0.713,0.765,0.682 and 0.809 (all P＜0.001),and the value of combined score was the highest.Conclusions The decreased levels of TB,UA and LDL-C are independently associated with PD.They possess certain clinical value in evaluating the prevalence risk of PD.
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Objective To explore the value of multislice CT (MSCT)in the diagnosis of complex congenital heart disease (FCHD)in children.Methods 41 children cases with clinical diagnosis of congenital heart disease were collected randomly.All the children were examined with MSCT and ultrasonic cardiogram(UCG)examination,and 20 cases were examined with cadioangiography(CAG) check.All the cases were confirmed by surgery.The results of Preoperative MSCT,UCG and the CAG heart examination diagnosis were compared with surgical diagnosis results.Results Surgery confirmed 225 deformities and 1 1 5 intracardiac malformations.In the intracardiacmal malformations,the accurate diagnostic rates of MSCT,UCG,the CAG were 92.2%,99.1% and 74.4%,respectively;With surgery confirmed 110 heart malformations,the accurate diagnostic rates of MSCT,UCG,the CAG were 98.2%,84.5%,96.2%,respec-tively.The combined use of MSCT and UCG confirmed 224 correct diagnoses,the diagnosis coincidence rate reached 99.6%;The check accuracy of MSCT was highter than UCG in congenital heart disease with heart malformations(χ2 =12.962,P <0.05),The differences has statistical significance.Conclusion The check accuracy of MSCT is better in the diagnosis of congenital heart disease.The joint application of MSCT and UCG can obviously improve the accuracy of the diagnosis of congenital heart disease and congenital anoma-lies.
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Objective To determine the prognostic value of maximum standard uptake (SUVmax) of pretreatment 18F-FDG PET-CT in patients with newly diagnosed soft tissue sarcomas (STS).Methods The clinical data of 34 patients with STS undergoing 18F-FDG PET-CT before treatment were analyzed retrospectively.The relationship between SUVmax of PET-CT and prognostic factors was evaluated by MannWhitney' s non-paraetric test and Spearman' s rank correlation test.The prognostic factors were analyzed by univariate and multivariate analysis.Results Among 34 patients, the median SUVmax was 10.3 (1.5-28.2), and the median maximum diameter was 6.7 cm (1.8-17.2 cm) with positively association between them (r =0.389, P =0.028).SUVmax was also associated with pathological grade, AJCC staging and distant metastasis, respectively (all P ＜ 0.05).In univariate analysis, distant metastasis, pathological grade, AJCC staging, and SUVmax were found to be the prognostic factors (all P ＜ 0.05).Multivariate analysis results indicated that only the SUVmax and distant metastasis were the independent unfavorable prognostic factors (both P ＜ 0.05).Conclusions The SUmax of pretreatment 18F-FDG PET-CT is well correlated with prognostic factors, and it can predict the prognosis of patients with STS.
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Objective To evaluate the clinical value of 18F-FDG PET-CT imaging on monitoring recurrence, metastasis and therapeutic decision-making in small intestinal adenocarcinoma patients after radical surgery. Methods Twenty-two patients were enrolled, who underwent surgical operation before received PET-CT scan. PET-CT findings were retrospectively observed to compare with the results of follow-up [postoperative pathology and (or) long-term clinical follow-up]. The roles of PET-CT on therapeutic decision-making were then investigated. Results Among 22 patients, 14 cases were finally diagnosed as recurrence and (or) metastasis, the other 8 cases as disease-free survival after long-term follow-up. According to PET-CT, 13 cases were diagnosed as recurrence and (or) metastasis (including 12 true-positive and 1 false-positive), and 9 cases were negative (including 2 false-negative). The diagnostic sensitivity, specificity, accuracy, positive predictive value and negative predictive value of PET-CT were 85.7 % (12/14), 87.5 % (7/8), 86.4 %(19/22), 92.3%(12/13) and 77.8%(7/9), respectively. The therapeutic decisions were changed in 10 patients (10/22, 45.5 % ) based on PET-CT results. Conclusion 18F-FDG PET-CT has an important clinical value on the detection of recurrence and (or) metastasis of small intestinal adenocarcinoma, which is an ideal method of monitoring.
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<p><b>OBJECTIVE</b>To investigate the clinicopathologic features and differential diagnoses of non-involuting congenital hemangioma (NICH) in children.</p><p><b>METHODS</b>The clinical, morphologic and immunophenotypic characteristics of 22 cases of NICH were retrospectively analyzed.</p><p><b>RESULTS</b>The mean patients' age at diagnosis was 4.2 years, with a male to female ratio of 1.75:1. The tumors were located in the head and face (5 cases), neck (3 cases), body (6 cases), upper limbs (5 cases), and lower limbs (3 cases). Histologically, the tumor was dominated by rather large lobules of small vessels that were mostly rounded, curved, small and thin-walled, and were lined by endothelial cells surrounded by one or more layers of pericytes. The center of the lobules was occupied by one or more thin or thick walled vessels, which were surrounded by fibrous and fatty tissue, which contained abnormal arterial and venous structures. At the edge of the lobules there were lymphatic vessels. Immunohsitochemical study showed that tumor cells in NICH were positive for CD34 (22/22), CD31 (22/22), SMA (22/22), vimentin (22/22) and Glut1 (0/22). D2-40 expression was located at the edge of the capillary lobules.</p><p><b>CONCLUSIONS</b>NICH is a benign lesion. Clinically and pathologically, it needs to be differentiated from rapidly involuting congenital hemangioma, infantile hemangiomas, tufted angioma, vascular malformation, and others.</p>
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Pré-Escolar , Feminino , Humanos , Masculino , Biomarcadores Tumorais , Diagnóstico Diferencial , Hemangioma Capilar , Diagnóstico , Estudos RetrospectivosRESUMO
Objective To investigate the prognostic value of interim and post-therapy 18F-FDG PET-CT in patients with peripheral T-cell lymphoma.Methods A retrospective analysis was conducted on data from 44 patients with newly diagnosed peripheral T-cell lymphoma who underwent interim (after 3 cycles of chemotherapy,27 cases) or posttherapy PET-CT (after the completion of first-line therapy,35 cases).Interim and posttherapy PET-CT status (positive vs negative) was visually interpreted according to criteria of the International Harmonization Project,and PET-CT status was assessed for its ability to predict progression-free survival (PFS) and overall survival (OS).Results Interim 18F-FDG PET-CT results were positive in 16 cases and negative in 11 cases.The median PFS and OS in the patients with positive results were 8 months and 14 months,respectively,while those in patients with negative results were 30 months and 39 months,respectively.The 2-year PFS and 3-year OS rates in patients with positive results at interim PET-CT were 18.8 ％ (3/16) and 12.5 ％ (2/16),respectively,while those in patients with negative results were 90.0 ％ (10/11) and 63.6 ％ (7/11),respectively (x2 =13.092,P =0.000; x2 =7.386,P =0.007,respectively).Posttherapy 18F-FDG PET-CT results were positive in 14 cases and negative in 21 cases.The median PFS and OS in patients with positive results were 10 months and 22 months,respectively,while those in patients with negative results were 26 months and 38 months,respectively.The 2-year PFS and 3-year OS rates in patients with positive results at posttherapy PET-CT were 7.1％ (1/14) and 14.3 ％ (2/14),respectively,while those in patients with negative results were 76.2 ％ (16/21) and 57.1％ (12/21),respectively (x2 =15.574,P =0.000;x2 =6.245,P =0.012,respectively).Conclusion Both interim PET-CT status and posttherapy PET-CT status have significant value in monitoring response to therapy and predicting prognosis for patients with peripheral T-cell lymphoma.
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<p><b>OBJECTIVE</b>To investigate the prognostic value of interim and post-therapy PET-CT in patients with diffuse large B-cell lymphoma.</p><p><b>METHODS</b>A retrospective analysis was conducted on data from 116 patients with newly diagnosed diffuse large B-cell lymphoma. 43 patients underwent interim PET-CT after 4 cycles of chemotherapy, 48 patients underwent post-therapy PET-CT after 6-8 cycles of chemotherapy, and 25 patients underwent both interim PET-CT and post-therapy PET-CT. The patients were divided into three groups: complete response group, partial response group and no response group. The therapeutic response was assessed by comparing with baseline PET-CT. PET-CT status was assessed for its ability to predict progression-free survival (PFS) and overall survival (OS). The 2-year PFS rate and 3-year OS rate were evaluated using chi-square test. PFS and OS were estimated according to the Kaplan-Meier method and survival curves were compared by log-rank test.</p><p><b>RESULTS</b>Interim PET-CT: The interim PET-CT findings of 42 patients were judged as complete response, 15 were judged as partial response, and the rest 11 were judged as no response. The 2-year PFS rates of the complete response group, partial response group and no response group were 61.9%, 60.0%, and 18.2%, respectively, and the 3-year OS rates were 52.4%, 46.7% and 9.1%, respectively. There were no significant differences between the complete response group and partial response group in 2-year PFS rate and 3-year OS rate (P > 0.05 for both). But there was a significant difference between the partial response group and no response group (P < 0.05). The post-therapy PET-CT findings of 50 patients was judged as complete response, 11 as partial response, and the rest 12 were judged as no response. The 2-year PFS rate of the complete response group, partial response group and no response group were 82.0%, 45.5%, and 8.3%, respectively, and the 3-year OS rates were 88.0%, 54.5%, and 8.3%, respectively. There were significant differences between the complete response group and partial response group in 2-year PFS rate and 3-year OS rate (P < 0.05), and there was a significant difference between the partial response group and no response group (P < 0.05).</p><p><b>CONCLUSIONS</b>Compared with the interim PET-CT, post-therapy PET-CT can accurately evaluate the prognosis of patients with DLBCL. Interim PET-CT cannot define the prognosis of the complete response and partial response patients.</p>
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Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Intervalo Livre de Doença , Fluordesoxiglucose F18 , Linfoma de Células B , Linfoma Difuso de Grandes Células B , Diagnóstico por Imagem , Tomografia por Emissão de Pósitrons , Prognóstico , Radiografia , Indução de Remissão , Estudos Retrospectivos , Resultado do TratamentoRESUMO
Objective To evaluate the accuracy of 99mTcO4- gastrointestinal imaging in the diagnosis of Meckel’s diverticulum in children. Methods The clinical data of 99mTcO4-imaging, surgery and pathological results of 95 children with gastrointestinal bleeding were retrospectively analyzed. Results Forty-four cases of 95 patients had positive ifnding of 99mTcO4-ectopic gastric mucous membrane imaging, and positive rate was 46.3%. In the positve cases 52.3%cases (23/44) were diagnosed of intestinal heterotopic gastric mucosa, 47.7%cases (21/44) were suspected of intestinal heterotopic gastric mucosa. The sex ratio (males to females) was 7.8:1. Thirty-seven positive cases underwent operation;among them, 35 cases were found to have Meckel’s diverticulum and 1 case had duplication of the digestive tract;Diverticulum lesion was not found in 1 case. The samples of 35 cases diagnosed surgically of Meckel’s diverticulum were examined by pathologic histology. All 35 cases were conifrmed as Meckel’s diverticulum and ectopic gastric mucosa epithelium, including 2 cases with ulcer formation, 1 case with small patches of pancreatic tissue, 1 case with ileocecal junction of suppurative enteritis and 1 case with chronic appendicitis. Conclusions 99mTcO4-radionuclide imaging technique is of high value for the non-invasive diagnosis of children’s Meckel’s diverticulum.
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Objective To investigate the clinical value of 18F-FDG PET/CT in staging,therapeutic response evaluation,relapse early detection and prognostic prediction of follicular lymphoma (FL).Methods Twenty-eight patients (12 males,16 females; average age 57 (36-82) years) with pathologically confirmed FL from December 2005 to January 2013 were enrolled.All patients underwent 18F-FDG PET/CT before treatment.The SUVmax of different staging groups,different pathological grade groups (high:3a+3b; low:1+2) was compared.Seventeen of 28 patients underwent PET/CT after chemotherapy and received phone follow-up (10-88 months) to monitor the progress of treatment.Survival difference was analyzed.Mann-Whitney u test,Wilcoxon signed-rank test and Kaplan-Meier survival analysis were used for data analysis.Results (1) The initial clinical staging without 18F-FDG PET/CT based on Ann Arbor standard changed in 4 cases (up-staging in 3 cases,down-staging in 1 case) after the PET/CT scan.The 18F-FDG uptake (SUVmax) in patients of stage Ⅰ/Ⅱ and stage Ⅲ/Ⅳ was 10.1±3.2 and 11.5±4.9,respectively (Z=-0.619,P＞0.05).The SUVmax in patients of the low grade group (6.9±3.6,n=15) was significantly lower than that of the high grade group (12.4±5.6,n=13) (Z=-3.706,P＜0.01).(2) 17 patients underwent PET/CT scan both before and after chemotherapy,the pre-treatment SUVmax and post-treatment SUVmax were significantly different in CR+PR group (10.8±5.1 vs 3.4±2.3; Z=-2.312,P＜0.05),while there was no significant difference in SD+PD group (11.2±6.9 vs 7.8±3.3; Z=-1.153,P＞0.05).There was a significant difference in the median progress-free survival time between the CR+PR group and the SD+PD group (48 months vs 26 months; x2 =4.207,P＜0.05).Conclusion 18F-FDG PET/CT has an advantage in clinical staging,therapeutic evaluation,relapse monitoring and prognosis predicting of FL.
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Objective To investigate the prognostic value of interim and post-therapy 18fluorine-fluododeoxyglucose(18F-FDG) PET-CT in patients with T-cell lymphoma.Methods A retrospective analysis was conducted on data from 50 patients diagnosed with T-cell lymphoma(12 patients underwent interim PET-CT only,19 patients underwent interim and post-therapy PET-CT,and the rest 19 patients underwent only post-therapy PET-CT).Interim and post-therapy PET-CT(positive versus negative) were visually interpreted according to the criteria of the International Harmonization Project.The progression-free survival (PFS) and overall survival(OS) of two groups were calculated.We used the Fisher exact test and KaplanMeier testfor data analysis.Results Interim 18F-FDG PET-CT results were positive in 19 cases and negative in 12 cases.The median PFS and OS were 8 months and 16 months,in patients with positive results,versus 30 months and 36 months,in patients with negative results.The 1-year PFS and 3-year OS rates were 21.1％ (4/19) and 10.5％(2/19) in patients with positive results at interim PET/CT versus 100.0％(12/12) and 66.7％ (8/12) in patients with negative results(P＜0.01.Post-therapy 18F-FDG PET-CT results were positive in 16 cases and negative in 22 cases,the median PFS and OS were 10 months and 20 months in patients with positive results versus 32 months and 41 months in patients with negative results.The 1-year PFS and 3-year OS rates were 12.5％(2/16) and 12.5％(2/16),in patients with positive results at post-therapy PET-CT versus 95.5％(21/22) and 54.5％(12/22),in patients with negative results(P＜0.01).Conclusion Both interim PET-CT status and post-therapy PET-CT have significant value in monitoring response to therapy and predicting prognosis for patients with T-cell lymphoma.
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Objective To summarize the imaging manifestations of 18F-FDG PET/CT in patients with secondary hemophagocytic lymphohistiocytosis (sHLH).Methods From January 2008 to June 2012,31 patients (18 males,13 females,average age:42 years) with sHLH were enrolled.All patients were divided into 3 groups:malignancy associated HLH (MAHLH) group (n =13),infection associated HLH (IAHLH) group (n =13) and rheumatosis associated HLH (RAHLH) group (n =5).They all underwent 18F-FDG PET/CT and SUVmax of lesions in each group was calculated.One-way analysis of variance and two-sample t test were used to analyze the SUVmax.Results Twenty-three patients were found splenomegaly with high FDG uptake,including 4 RAHLH patients,9 IAHLH patients and 10 MAHLH patients.The splenetic FDG uptake values (SUVmax) of RAHLH,IAHLH and MAHLH groups were 3.16±0.61,5.67±3.37 and 6.04±3.06,respectively (F=1.051,P＞0.05).The SUVmax of enlarged lymph nodes in IAHLH (n=8) and MAHLH groups (n =7) was 5.35± 1.69 and 10.14±5.24,respectively (t =-2.456,P＜0.05).Increased uptake in bone marrow was found in 17 patients,including 1 RAHLH patient,7 IAHLH patients and 9 MAHLH patients.The SUVmax of bone marrow in IAHLH and MAHLH patients was 5.31±2.05 and 6.36± 3.71 respectively (t=-0.670,P＞0.05).There were 10 cases of hepatomegaly,but only 4 of them had intense FDG uptake (SUVmax 4.9-10.2).The SUVmax of RAHLH,IAHLH and MAHLH groups was 3.02± 1.31,5.62±2.45 and 8.15±4.38,respectively (F=9.123,t=2.562,5.236,3.030,all P＜0.05).Conclusions RAHLH mostly showed splenomegaly with high FDG uptake,IAHLH and MAHLH both showed splenomegaly with lymph node and bone marrow invasion.The SUVmax of MAHLH was the highest.18F-FDG PET/CT imaging manifestations of sHLH may be helpful to improve the diagnostic accuracy.
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Objective To investigate the prognostic value of interim and post-therapy 18F-FDG PET/CT in patients with DLBCL.Methods A retrospective analysis was conducted in 110 patients (62males,48 females; median age 52 years) with newly diagnosed DLBCL.Forty-two patients underwent interim PET/CT after 4 cycles chemotherapy,44 patients underwent post-therapy PET/CT after 6-8 cycles of chemotherapy,and 24 patients underwent both interim PET/CT and post-therapy PET/CT.Interim and post-therapy PET/CT status (i.e.,positive or negative) were visually interpreted according to criteria of the International Harmonization Project.Three-year progression-free survival (PFS) and 3-year overall survival (OS) was compared between the subjects with positive or negative PET/CT results.x2 test and KaplanMeier analysis were used for data analysis.Results Interim 18F-FDG PET/CT results were positive in 28cases and negative in 38 cases.The median PFS and OS were 20 and 28 months in patients with positive scan results,those were 37 and 39 months in patients with negative results,respectively.Three-year PFS and 3-year OS rates were 17.9％(5/28) and 35.7％(10/28) in patients with positive interim PET/CT results,those were 52.6％ (20/38) and 55.3％ (21/38) in patients with negative results (x2 =8.285,P ＜0.01,x2=2.473,P＞0.05,respectively).Post-therapy 18F-FDG PET/CT results were positive in 20 cases and negative in 48 cases.Median PFS and OS were 21 and 26 months in patients with positive results,those were 54 and 57 months in patients with negative results.Three-year PFS and 3-year OS rates were 20.0％(4/20) and 25.0％ (5/20) in patients with positive results at post-therapy PET/CT,those were 77.1％(37/48) and 83.3％ (40/48) in patients with negative results (x2=19.215,21.462,both P＜0.01).Conclusions Post-therapy 18F-FDG PET/CT is useful to predict prognosis of patients with DLBCL.However,the value of interim PET/CT may be limited in terms of prognosis prediction.