Carcinoma, Hepatocellular ; diagnosis ; diagnostic imaging ; pathology ; Humans ; Liver Neoplasms ; diagnosis ; diagnostic imaging ; pathology ; Magnetic Resonance Imaging ; Tomography, X-Ray Computed ; Ultrasonography

Brain Diseases ; etiology ; therapy ; Heat Stroke ; complications ; therapy ; Humans ; Hyperbaric Oxygenation ; Male ; Middle Aged ; Occupational Diseases ; complications ; therapy

Objective To evaluate the role of multidetector CT(MDCT) and high magnetic field MRI in diagnosis of small cystic-solid renal mass. Methods Fifty-two cases with small renal cystic-solid mass(≤3 cm) were consecutively collected,including small cystic-solid renal cell carcinoma(n=25),carcinoid(n=1),complex cysts(n=16),small angiomyolipoma(n=7) and benign cystic nephroma(n=3).All were examined by both 1.5T MRI and multidetector CT at intervals between 3 days and 2 months. Results All cases were proved by pathology.Multi-planar reconstruction techniques were useful for MDCT in differentiating small cystic-solid renal mass,with the sensitivity of 98.1%,which was as high as MRI.However,the accuracy for MDCT was 71.2%,significantly lower than that of MRI(90.4%)(P=0.001).MRI helped to identify the components and structure of renal masses,and behaved better in the detection of pseudo-capsule of renal cell carcinoma(57.7%).Conclusion High magnetic field MRI may play an important role in the diagnosis of small renal cystic-solid masses,and it may be feasible as a noninvasive examination when CT can not make the ultimate determination.

Objective:To systematically review the relationship between CYP3A4*1G gene polymorphism and the analgesic effect of fentanyl-related drugs.Methods:The related literature about the effect of gene polymorphism on analgesic effect of fentanyl-related drugs published at home and abroad was searched in PubMed, Embase, Cochrane Library, CNKI, Wanfang and China Biomedical Literature databases from database establishment to August 2019. According to the inclusion and exclusion criteria, two researchers screened the literature independently, extracted the data and evaluated the methodological quality. Data analysis was performed by Review Manager 5.1 software.Results:Six literature was enrolled with 1 050 cases, including 543 cases of wild-type homozygote (CC), 437 cases of heterozygote (CG) and 70 cases of mutant homozygote (GG). The results showed that there was no significant difference in pain score between the three groups in a pairwise comparison at 24 hours after operation (all P > 0.05), but the consumption of fentanyl-related drugs in GG group was lower than that in CC group and CG group, and the differences were statistically significant [GG group vs. CC group: standardized mean difference (SMD) = -0.78, 95% CI -1.03- -0.52, P<0.01; GG group vs. CG group: SMD = -0.61, 95% CI -0.87- -0.35, P<0.01]. Conclusions:CYP3A4*1G gene polymorphism can affect the postoperative analgesia effect of fentanyl-related drugs. With the same analgesic effect, the consumption of fentanyl-related drugs in GG patients is reduced.

Carcinoma, Hepatocellular ; diagnosis ; diagnostic imaging ; Humans ; Liver Neoplasms ; diagnosis ; diagnostic imaging ; Magnetic Resonance Imaging ; Tomography, X-Ray Computed

Objective To assess the various features of Budd-Chiari syndrome(BCS)on three- dimensional contrast-enhanced magnetic resonance angiography(3D CE MRA)and to evaluate the potential value of this new technique.Methods Thirty-three patients with BCS underwent 3D CE MRA examination. In 23 cases,BCS was secondary to hepatocellular carcinoma(21 patients)or right adrenal carcinoma (1 patient)or thrombophlebitis(1 patient).Ten patients had primary BCS.The patency of the hepatic veins,inferior vena cava(IVC)and portal veins were assessed.The presence of intra-and extrahepatic collaterals,liver parenchymal abnormalities and porto-systemic varices were evaluated.The diagnosis on 3D CE MRA was correlated with that on inferior vena cavography and right hepatic venography,which were available in 10 and 2 cases respectively.Results Various features of BCS were displayed on 3D CE MRA. Hepatic venous findings included tumor thrombosis(19 patients),tumor compression(2 patients), nonvisualization(4 patients)and focal stenosis(4 patients)of the hepatic veins.IVC findings were severe stenosis or occlusion(10 cases),tumor direct invasion(2 cases),tumor thrombosis(3 cases), thrombophlebitis(1 case)and web formation(3 cases).Intrahepatic collaterals were demonstrated in 9 patients including 2 with "spider web" sign.Detected extrahepatic collaterals included dilated azygos and hemiazygos veins(13 cases)and left renal-inferior phrenic-pericardiophrenic collaterals(2 cases).The occlusion of the left portal vein and the presence of porto-systemic varices were depicted in 2 and 10 patients respectively.Liver parenchymal abnormalities identified by 3D CE MRA consisted of caudate lobe enlargement(7 cases),heterogenous enhancement(18 cases)and associated tumors(18 cases). Compared with inferior vena cavography and hepatic venography,the accuracy of 3D CE MRA in the diagnosis of IVC obstruction or hepatic venous stenosis was 100%.Conclusion 3D CE MRA can display various features of BCS and has the potential to provide an accurate diagnosis.

Objective To explore the dynamic spiral CT findings of adrenal ganglioneuromas and to evaluate its clinical value.Methods All 7 cases patients with adrenal ganglioneuromas confirmed by surgical pathology underwent spiral CT plain scanning and two phases dynamic enhancement scanning before operation.The CT images were reviewed and analysed retrospectively in comparison with surgical and pathological results.Results Six of 7 lesions were located in the right adrenal gland,1 in the left.The diameter of the tumors was 3.7—7.5cm,with a mean diameter of 4.6cm.The CT value of the plain scans, AP phases and PVP phases was 16.2—31.7 HU(with a mean value of 24.3 HU),20.9—36.6 HU(with a mean value of 30.2 HU),and 27.4—45.5 HU(with a mean value of 36.0 HU),respectively.The masses were well defined and showed a tendency of wedging into the space between the adjacent organs and structures and encasing the large vessels such as IV,but didn't compress or occlude them.Conclusion The dynamic SCT features of adrenal ganglioneuromas were obvious,dynamic SCT scans could suggest the diagnose.

Objective To investigate the prevalence of uncorrected refractive errors among urban population aged 50 years and above in Ftming county,Jiangsu province.Methods Survey research was conducted and randomly cluster sampling was used to select individuals aged ≥50 years for visual acuity test and eye examination in Funing county,Jiangsu province.The criteria of uncorrected refractive errors in this study was defined as an improvement of at least 0.2 log MAR (equivalent to 2 lines) in the best corrected visual acuity with the base vision ＜ 0.5 log MAR in daily life.The quantitative data were expressed as mean ± standard deviation,and t-test was used for comparison between groups,and while the count data were expressed as rate or composition ratio,and the x2 test was adopted for comparison between the groups.Logistic regression was used to examine the effect of possible factors (i.e.age and gender) on the prevalence of uncorrected refractive errors.Results A total of 6145 persons aged 50 years and above were enumerated and 5947 (96.8％) participants were examined,of whom 2388 had uncorrected refractive errors,with the prevalence of 40.2％.The prevalence of uncorrected refractive errors for myopia only,hyperopia only,astigmatism,and for hyperopia and astigmatism were 84.4％,84.2％,64.1％ and 100％,respectively.Moreover,the higher prevalence of uncorrected refractive errors presented in elderly person (OR =1.07,P ＜ 0.00l) and female (OR =1.38,P ＜ 0.001),and education was a protective factor for junior high school (OR =0.74,P =0.003) and high school (OR =0.55,P ＜ 0.001).Conclusion Uncorrected refractive errors presented high prevalence in rural population aged 50 years and above in Funing county,Jiangsu province,which are the leading cause of visual impairment.

OBJECTIVESTo evaluate multiphase hepatic CT scan using multidetector row helical CT (MDCT) in detecting hypervascular small hepatocellular carcinoma (SHCC).

METHODSMultiphase hepatic CT scan in 75 patients with SHCC was carried out with Marconi MX8000 multidetector row helical CT scanner. The early arterial phase scan started at the 21th second after the injection of contrast medium, the late arterial phase scan started at the 34th second, and the portal venous phase started at the 80tieth second, six seconds every time.

RESULTSThe study showed that the density values of 71 lesions between liver and SHCC were different significantly among the early arterial phase, the late arterial phase and the portal venous phase (F=3.327, P<0.05). Among the 91 lesions, the detectable rates of the early arterial phase and the late arterial phase were 45.1% and 83.5%, respectively. The rate of double arterial phases was 92.3%. The rates increased to 94.5% and 97.8%, when the late arterial phase combined with the portal venous phase and the double arterial phase combined with the portal venous phase.

CONCLUSIONThe utility of MDCT with faster speed, thinner slice and multiphases scanning has improved the opportunity of detecting hypervascular hepatocellular carcinoma.

Adult ; Aged ; Carcinoma, Hepatocellular ; diagnostic imaging ; Female ; Humans ; Liver Neoplasms ; diagnostic imaging ; Male ; Middle Aged ; Tomography, Spiral Computed ; methods

Objective To retrospectively analyze and conclude the characteristics of imaging appearances of solid psedopapillary tumor of pancreas.Methods Among 7 cases with pathologically proved solid psedopapillary tumor of pancreas,6 cases underwent CT examinations of upper abdomen preoperatively,and the rest One had MRI examination.The mean age of these 7 cases(all female)was 30.7 years(range,14—44 years).Results The tumors were usually quite large in the largest diameter ranged from 2.8 to 15.9cm(mean largest diameter,7.9 cm);Tumors were all well demarcated,and 5 of them were of capsule on CT or MR imaging.All tumors were well-encapsulated on pathologic specimens, except for the capsule of 1 tumor was partially invaded;In 6 cases underwent CT examination,scattered, punctate and linear calcification were noted in the capsule of 2 tumors and the rim of another one;Except for 1 tumor was almost solid,the other 6 tumors contained both solid and cystic components;Scattered sheets of high attenuation shown in the cystic or solid parts on CT imaging in several cases and the high signal intensity on T_1-weighted MR imaging signified the possibility of bleeding in tumors,which then was testified by pathologic evaluation.Conclusion The solid psedopapillary tumor of pancreas has comparatively characteristic clinical and imaging features.