Objective To evaluate the diagnostic value of 18F-FDG PET/CT in patients with pancreatic neoplasm.Methods Fifty-three patients (36 males,17 females; age:(60.3±8.9) years) who underwent 18F-FDG PET/CT examination for suspected pancreatic tumor were retrospectively analyzed.Thirtytwo of them underwent dual-time point imaging.The characteristics of PET/CT images and serum CA19-9 were reviewed.Pathological results were used as a gold standard for evaluating the diagnostic value of PET/CT.Two-sample t test,paired t test and ROC curve analysis were used for data analysis.Results Thirtynine patients were finally diagnosed with pancreatic cancer and the other fourteen patients with benign disease.With SUVmax cutoff value of 3.13,the sensitivity and specificity of single-time point 18F-FDG PET/CT for diagnosis of pancreatic cancer were 92.3％ (36/39) and 9/14,respectively.The SUVmax was significant different between pancreatic cancer group and benign disease group (6.16±2.89 vs 3.37± 1.58; t =4.46,P＜0.01).Combined with the level of CA19-9,the diagnostic sensitivity and specificity were 69.2％ (27/39)and 13/14,respectively.The SUVmax of the early scan (5.45±2.43) was significantly different from that of the delayed scan (6.87±2.93) in pancreatic cancer group (t =8.25,P＜0.01),whereas no difference could be found in the benign group (3.18±1.28 vs 4.18±2.49; t=2.24,P＞0.05).With the SUVmax cutoff value of 3.3,the sensitivity,specificity and accuracy in the early scan were 87.0％ (20/23),6/9 and 81.2％ (26/32),respectively.While with the SUVmax cutoff value of 3.0,the sensitivity,specificity and accuracy in the delayed scan were 95.7％ (22/23),5/9 and 84.4％ (27/32),respectively.Conclusion 18 F-FDG PET/CT is a useful tool in the differential diagnosis of benign from malignant pancreatic diseases.

Objective To assess the memory function of hyperthyroid patients at different disease durations and investigate the value of cerebral blood flow (CBF) imaging in the detection of memory dysfunction in related regions.Methods Thirty-seven hyperthyroid patients (10 males,27 females; mean age (39.27± 10.58) years) and 28 healthy volunteers (8 males,20 females; mean age (35.80±9.41) years) were enrolled into this prospective study.The patients were divided into two subgroups: short duration group (duration ≤ 6 months; n =15),long duration group (duration ＞6 months ; n =22).Wechsler memory scale was used for memory assessment,and cancellation test was used for attention assessment.Self-rating depressions scale (SDS) and self-rating anxiety scale (SAS) were used for mood disorder assessment.99Tcm-ECD SPECT CBF imaging was performed at rest for all patients and controls on the same day.SPM 2.0 was used to investigate the differences of rCBF between the two groups.Two independent samples t test was used for the comparisons of memory and attention scores between patients and controls,also between patients with short and long disease durations.Multiple stepwise regression was used for factor analysis of memory state.Results Scale total score (92.27±17.50 vs 101.75±11.70; t=-2.476)and memory quotient (91.32±17.76 vs 100.29±9.43 ; t =-2.421) were significant different between patients and controls (both P＜0.05).The scale total score and memory quotient in patients with long disease duration were significant lower than those of controls(88.77±16.69 vs 101.75±11.70,t=-3.231; 86.18±16.73 vs 100.29±9.43,t=3.770,both P＜0.05).The memory quotient was significant lower in patients with long disease duration than those with short disease duration(86.10± 17.13 vs 98.87± 17.00; t =2.212,P＜0.05).There was no significant difference in memory quotient and scale total score between short duration group and controls (t=-0.754,0.910,both P＞0.05).CBF was reduced in the limbic system of hyperthyroid patients and the involved area was larger in patients with long disease duration.Age,attention score,serum FT4 level and reduced CBF in left pulvina nuclei,left lateral geniculate body and right amygdale were the statistically significant factors for impaired memory function in hyperthyroid patients (b=-0.393-0.685,all P＜0.05).Conclusions Memory impairment could be significant in hyperthyroid patients with long disease duration.CBF imaging could reflect the degree of dysfunction at specific brain regions responsible for memory impairment in these patients.

Objective To establish a mouse model of lung adenocarcinoma brain metastasis with human luc+-PC?9 cells stably expressing luciferase and to compare the evaluation values of bioluminescence imaging and18 F?FDG ( 18 F?flu?orodeoxyglucose) SPECT/CT in these models. Methods Suspension of luc+?PC?9 cells was injected into the left ventri?cle of BALB/c nude mice to establish a mouse model of brain metastasis from lung cancer. Bioluminescence imaging and18 F?FDG SPECT/CT were used to evaluate the metastasis of tumors as compared with HE?staining pathology as a golden standard. Results The success rate of brain metastases was 85% through injecting luc+?PC?9 cells into the left ventricle. The number of tumor cells was positively related to the intensity of light, with a linear correlation (R2 =0. 96). Fluores?cence was observed in the brain, spine and femur by bioluminescence imaging, and the metastases were confirmed by H&E pathological examination. 18 F?FDG SPECT/CT observed abnormal density collective foci in the spine or femur but not in the brain. Conclusions Injection of tumor cell suspension into the mouse left ventricle is a good method to establish a brain metastasis of lung cancer. Bioluminescence has a higher sensitivity and specificity in detecting brain metastasis and bone metastasis, with advantages of real?time, dynamical and non?invasive detection of tumor metastasis growth. 18 F?FDG SPECT/CT does not have superiority in detection of brain metastases but is suitable for detecting bone metastasis.

Objective To learn the impacts of major diagnosis, other diagnoses, major surgery and other surgeries on the grouping of DRGs, and to optimize the DRGs data grouping quality by analyzing the main influencing factors of DRGs.Methods Based on regrouping results of the 1 940 questionable cases which have been corrected, using SPSS 13.0 to study the impacts of the questions found on the grouping of DRGs.Results 438 Patient records affecting DRGs grouping were regrouped according to major diagnosis, other diagnoses, major surgery and other surgeries.Influences of the above four groups on the grouping vary in general For comparison between two groups, P＞0.007 1 between main surgery and other surgeries;while P＜0.007 1 for comparison between other groups.Conclusion The highest influence of grouping was found in questionable major diagnosis, much higher than such other factors as other diagnoses, major surgery and other surgeries.This conclusion conforms to the steps of basic DRGs grouping logic-sorting the eases according to major diagnosis first of all Correct naming of surgery influences DRGs grouping, but the influence extent of major surgery and other surgeries is close.

To study the pharmacokinetics of ~(131)I-Metuximab injection (Licartin) combined with transarterial chemoembolization (TACE) for treatment of hepatocellular carcinoma (HCC). MethodsLicartin (27.75 MBq/kg) and the mixture of anticancer drug and Lipiodol were sequentially administered with interval of 20 minutes to 15 patients with HCC via a transfemoral catheter.After the Licartin was administrated, the pharmacokinetic and biodistribution data were evaluated through venous blood samples,urine collections,and 4 γ-scintigraphies (SPECT) over 7 days. The pharmacokinetic parameters were determined from integration of the blood radioactivity-time curves using the SPSS 12.0 software. The tumor-no-tumor ratio (T/NT) was calculated by ROI. Absorbed doses in organ were estimated according to the medical internal radiation dose formalism. The biodistribution of licartin within patient's body at different time points was compared for various organs using analysis of variance for repeated measures, as well as the T/NT ratio. ResultsThe blood radioactivity-time curves followed the dynamics two-compartment model, with the major pharmacokinetic parameters including t_(1/2)α(1.96±1.65) h, and t_(1/2)α(19.07±5.91) h,and t_(1/2)β (57.09±10.92) h, and C_(max) 2.113×10~9min~(-1)·L~(-1), and AUC_(0-∞) 1.302×10~(11) h·min~(-1)·L~(-1), respectively. The accumulated urine radioactivity was 52.2% of administrated dosage during 144 h after administration. There were statistical significant difference of biodistribution of licartin and T/NT ratio between organs at different time points (F=6.583, P<0.01 and F=3.546, P<0.01). SPECT scans showed the significant accumulation of the radioconjugate in liver tumor and faint uptake in other organs for 14 days. Tumor-to-liver ratio decreased from 2.88±1.02 at 3 h to 1.64±0.40 at 168 h (n=7). Organ absorbed dose was (3.19±1.01) Gy in liver (n=12) and (0.55±0.09) Gy in red marrow (n=7). ConclusionLicartin combined with TACE for treatment of HCC is helpful to significantly accrete the radioconjugate in liver tumor, and protect normal organs from radiotoxictiy.

Objective:To explore the imaging features of 18F-fluorodeoxyglucose (FDG) PET/CT (high-resolution CT, HRCT) imaging in focal organizing pneumonia (FOP). Methods:Patients with solid nodular FOP ( n=45; 33 males, 12 females, age (58±9) years) and early peripheral non-mucinous solid lung adenocarcinoma ( n=47; 21 males, 26 females, age (63±10) years) confirmed by postsurgical pathology between May 2012 and December 2018 in Zhongshan Hospital, Fudan University were retrospectively analyzed. All patients underwent 18F-FDG PET/CT (HRCT) imaging followed by surgery within 3 weeks. The imaging findings and characteristics of the lesions were recorded. Differences of the maximum standardized uptake value (SUV max) and maximum diameter between FOP and adenocarcinoma were analyzed by Mann-Whitney U test or t′ test. Spearman correlation or Pearson correlation analysis was performed to analyze the relation between SUV max and maximum diameter. Binary logistic regression analysis was performed to identify the predictive factors for FOP. Finally, the receiver operating characteristic (ROC) curve analysis was used for evaluation of diagnostic efficiency. Results:The SUV max of FOP was lower than that of lung adenocarcinoma (3.1(1.7, 4.9) vs 6.5(3.8, 9.3); z=-4.598, P<0.01), and the maximum diameter of FOP was smaller than that of lung adenocarcinoma ((18.0±6.3) mm vs (21.8±4.3) mm; t′=-3.424, P<0.01). The SUV max was positively correlated with the maximum diameter in FOP group ( r s=0.509, P<0.01), while the SUV max of lung adenocarcinoma was not correlated with the lesion size ( r=0.076, P>0.05). HRCT of the PET/CT system showed the fusiform shape were more common in FOP ( χ2=9.549, P<0.05). Multivariate regression analysis identified that SUV max≤7.1, diameter≤18.3 mm, and fusiform shape were independent factors to predict FOP, with odds ratio ( OR) of 10.585, 4.674, 9.073, respectively (all P<0.05). ROC curve analysis showed that the area under the curve (AUC) of SUV max≤7.1 combined with diameter≤18.3 mm and fusiform nodule was 0.860, and the sensitivity, specificity, positive predictive value, negative predictive value and accuracy were 97.8%(44/45), 70.2%(33/47), 75.9%(44/58), 97.1%(33/34), and 83.7%(77/92), respectively. Conclusion:SUV max≤ 7.1 combined with maximum diameter≤ 18.3 mm and fusiform shape may predict solid nodular FOP.

OBJECTIVETo analysis the pathological demography in Chinese patients undergoing renal biopsy from our nephrology center.

METHODSBetween January 1979 and October 2000 in Jinling Hospital, Nanjing, China, 10,002 attempts of percutaneous renal were performed in patients with renal disease from 33 provinces of China. The pathological classifications were made according to the WHO criteria of 1982 for renal pathology or the modified WHO criteria of 1995 by a panel of pathologists and nephrologists during routine clinical-pathological rounds. The pathological demography between those specimens collected from 1979 - 1989 and those from 1990 - 1999 was compared.

RESULTSThe mean age of the 10,002 subjects undergoing renal biopsy was 31.4 +/- 13.0 years (ranging from 1 to 78 years), with a male to female ratio of 1.3:1; for the 592 renal transplant recipients, the mean age was 37.5 +/- 9.1 years (ranging from 16 to 66 years), with a male to female ratio of 2.36:1. Primary glomerular diseases (PGD) accounted for 71% of the total patients undergoing renal biopsies, secondary glomerular nephritis (SGN) 23%, tubular-interstitial diseases 3.2%, unclassified renal diseases 1.3%, hereditary and congenital renal diseases 1.0%, end stage renal diseases 0.96%, and recently realized or rare renal diseases 0.15%. IgA nephropathy (IgAN) was the most frequent pathological pattern (40%) of PGD, followed by mesangial proliferative lesion (MsPL) (30%), membranous nephropathy (MN) (10%), and focal segmental glomerulosclerosis (FSGS) (6%). Lupus nephritis (LN) was the most pathology common seen (74%) in SGN. During the 22 years of the study period, there was a steady increase in patients with SGN discovered during pathological evaluation of renal disorders. A rise in prevalence was found in IgA nephropathy, MN (both P < 0.001), crescentic glomerulonephritis (P < 0.0001), anti-GBM disease, and hemolytic-uremic syndrome/thrombotic thrombocytopenic purpura related renal damages (both P < 0.001). There was a decrease in endocapillary proliferative glomerulonephritis (P < 0.001) and IgM nephropathy (IgMN) (P < 0.01) from 1990 - 1999 as compared to 1979 - 1989. Infrequent renal pathological entities were also diagnosed in this group, including Niemann Pick disease, Fabry's disease, POEMS syndrome, and lipoprotein glomerulonephropathy.

CONCLUSIONSThis is the largest series of renal biopsy data in China, and therefore may reflect the demographic picture of renal diseases in this country. Changes in prevalence of renal pathological entities were reflected in this group of patients over the last 22 years. In primary glomerular diseases, IgA nephropathy is still the most frequently observed pathological pattern. In SGN, LN appeared the most often. Increased prevalence was found in anti-GBM nephritis and HUS/TTP.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Japan ; epidemiology ; Kidney Diseases ; epidemiology ; pathology ; Male ; Middle Aged ; Prevalence