Linfoma não-Hodgkin primário do fígado em paciente com SIDA

Non-Hodgkin's lymphomas (NHL) are the second most frequent malignancies in AIDS patients. The majority of NHL associated with AIDS involves extranodal sites, especially the digestive tract and the central nervous system. Primary liver lymphoma (PLL) is an uncommon neoplasm among these patients. Ultrasonography and computed tomography scans may be helpful in the diagnosis of focal hepatic lymphoma. Image-guided fine-needle biopsy with histopathology of the liver lesions is the gold standard for the diagnosis of hepatic lymphoma. We report a case of PLL as the initial manifestation of AIDS in a patient without any previous infection by hepatitis C or B virus, presented as multiple and large hepatic masses.Os linfomas não-Hodgkin (LNH) são as segundas neoplasias mais freqüentes nos pacientes com síndrome da imunodeficiência adquirida (SIDA). A maioria dos LNH associados à AIDS envolvem locais extra-ganglionares, especialmente o trato digestivo e o sistema nervoso central. O linfoma não-Hodgkin primário do fígado (LPF) é uma neoplasia incomum nestes pacientes. A ultrassonografia (US) e a tomografia computadorizada (TC) podem ser úteis no diagnóstico de linfoma não-Hodgkin hepático apresentando-se como lesões multifocais. A biópsia com agulha fina guiada por imagens (US, TC) juntamente com a histopatologia das lesões do fígado constitui o padrão-ouro para o diagnóstico de linfoma hepático. Este trabalho relata um caso de LPF como manifestação inicial de AIDS em um paciente sem infecção prévia pelo vírus da hepatite C e B, que se apresentou como massas hepáticas múltiplas e de grandes dimensões

Placement work experience may mitigate lower achievement levels of Black and Asian vs. White students at university

Ethnic minority groups have been shown to obtain poorer final year degree outcomes than their majority group counterparts in countries including the US, the UK and The Netherlands. Obtaining a lower degree classification may limit future employment prospects of graduates as well as opportunities for higher level study. To further investigate this achievement gap, we analysed performance levels across three academic years of study of 3,051 Black, Asian and White students from a UK University. Analyses of covariance investigated effects of ethnicity and work placement experience (internships) on first, second and final year marks, whilst statistically controlling for a number of factors thought to influence achievement, including prior academic performance. Results demonstrated superior achievement of White students consistently across all years of study. Placement experience reduced, but did not eliminate, the size of the achievement gap exhibited by final year students. Sex, parental education and socioeconomic status had no significant main effects. Female students showed a more complex pattern of results than males, with Black females not showing the same final year uplift in marks as their Asian and White counterparts. Implications and possible explanations are discussed

Relação de percepção de risco e consumo de álcool por adolescentes

El propósito del estudio fue conocer la relación entre percepción de riesgo y el consumo de alcohol en adolescentes de preparatoria. El estudio fue descriptivo, correlacional. El muestreo fue probabilístico, estratificado por semestre con asignación proporcional al tamaño de cada estrato, con una muestra de 345 adolescentes. Se utilizó una Cédula de identificación, el Cuestionario de Percepción de Riesgo hacia el Consumo de Alcohol y el instrumento AUDIT. De acuerdo a los resultados, se identificó una relación negativa significativa entre el índice de percepción de riesgo con el índice de AUDIT (rs= -.418, p=.001). Se concluye que a mayor percepción de riesgo, menor será el consumo de alcohol por parte de los adolescentes.O propósito do estudo foi conhecer a relação entre percepção de risco e o consumo de álcool por adolescentes do ensino médio. O estudo foi descritivo, correlacional. A amostragem foi probabilística, estratificada por semestre com distribuição proporcional ao tamanho de cada estrato, com uma amostra de 345 adolescentes. Utilizou-se uma ficha de identificação, um questionário de percepção de risco sobre o consumo de álcool e o instrumento AUDIT. De acordo com os resultados, identificou-se uma relação negativa significativa entre o índice de percepção de risco e o índice AUDIT (rs= -.418, p=.001). Conclui-se que quanto maior for a percepção de risco, menor será o consumo de álcool por parte dos adolescentes.The aim of the study was to discover the relationship between risk perception and alcohol consumption in adolescents in high school. This was a descriptive, correlational study. The sample was probabilistic, stratified by semester with allocation proportional to the size of each stratum, in a sample of 345 adolescents. We used identity cards, the Alcohol Risk Perception Questionnaire and the AUDIT instrument. The results showed a significant negative relationship between the risk perception rate and the AUDIT (rs= -.418, p=.001). We can conclude that the higher the perceived risk, the lower the alcohol consumption among adolescents

New insights into HIV-1-primary skin disorders

Since the first reports of AIDS, skin involvement has become a burdensome stigma for seropositive patients and a challenging task for dermatologist and infectious disease specialists due to the severe and recalcitrant nature of the conditions. Dermatologic manifestations in AIDS patients act as markers of disease progression, a fact that enhances the importance of understanding their pathogenesis

Azimuthal anisotropy of charged jet production in root s(NN)=2.76 TeV Pb-Pb collisions

We present measurements of the azimuthal dependence of charged jet production in central and semi-central root s(NN) = 2.76 TeV Pb-Pb collisions with respect to the second harmonic event plane, quantified as nu(ch)(2) (jet). Jet finding is performed employing the anti-k(T) algorithm with a resolution parameter R = 0.2 using charged tracks from the ALICE tracking system. The contribution of the azimuthal anisotropy of the underlying event is taken into account event-by-event. The remaining (statistical) region-to-region fluctuations are removed on an ensemble basis by unfolding the jet spectra for different event plane orientations independently. Significant non-zero nu(ch)(2) (jet) is observed in semi-central collisions (30-50% centrality) for 20 <p(T)(ch) (jet) <90 GeV/c. The azimuthal dependence of the charged jet production is similar to the dependence observed for jets comprising both charged and neutral fragments, and compatible with measurements of the nu(2) of single charged particles at high p(T). Good agreement between the data and predictions from JEWEL, an event generator simulating parton shower evolution in the presence of a dense QCD medium, is found in semi-central collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Peer reviewe

Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe

Forward-central two-particle correlations in p-Pb collisions at root s(NN)=5.02 TeV

Two-particle angular correlations between trigger particles in the forward pseudorapidity range (2.5 2GeV/c. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B. V.Peer reviewe

Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at root(NN)-N-S=2.76 TeV

Peer reviewe