Síndrome de Morgagni-Stewart-Morel: Morgagni-Stewart-Morel syndrome

Introdução: a síndrome de Morgagni Stewart Morel é uma entidade clínica rara. Sua principal característica é a hiperostose frontal interna. Além disso, conta com alterações endócrinas​ metabólicas e psiquiátricas. Pode estar acompanhada de obesidade, diabetes mellitus e hirsutismo. Possui maior prevalência na população feminina. Apresentação do caso: paciente do sexo feminino, 65 anos, obesa em menopausa há 12 anos. Relata em consulta queixa de cefaleia em aperto na região frontal há cerca de 6 anos. A mesma vem se intensificando gradativamente e há 01 semana a dor não é sanada mesmo com o uso de anti-inflamatórios ou analgésicos orais. Discussão: a síndrome de Morgagni-Stewart-Morel consiste em uma condição rara, caracterizada pela presença de Hiperostose Frontal Interna (HFI) associada a alterações metabólicas, psiquiátricas e endócrinas. Sua definição não é uniforme devido a diversidade de sintomas e a sua variabilidade em cada indivíduo. Possui incidência maior no sexo feminino e com idade acima de 50 anos, sua etiologia ainda é pouco conhecida. Algumas teorias buscam elucidar o tema como o aumento da leptina, desordem hormonal de andrógenos e há também defensores de uma síndrome genética, ligada ao X com penetrância variável. Conclusão: diante da raridade de casos da síndrome, o diagnóstico geralmente ocorre de modo incidental, por meio da correlação entre sintomatologia variada e investigação radiológica. Sua abordagem terapêutica é predominantemente sintomática, de modo a se optar por conduta cirúrgica em casos reservados

Avulsão da Espinha Ilíaca anterosuperior pós traumática : Post-traumatic anterosuperior Iliac Spine avulsion

Introdução: As lesões ósseas da pelve e quadril são raras, e ocorrem principalmente na faixa etária de 8 a 14 anos, e estão relacionadas à prática de atividades físicas de alto impacto e repetitivas. As fraturas por avulsão das espinhas ilíacas superior e inferior e tuberosidade isquiática tem maior incidência devido ao aumento da prática de desportos nessa faixa etária. Apresentação do caso: I.P.M, masculino, 17 anos de idade, procurou o serviço do Hospital Geral de Goiás (HGG), referindo dor iniciada há 30 dias na face anterior do quadril esquerdo, durante partida de futebol. Refere aumento da intensidade da dor, e ao exame físico possui equimose local, edema e dor em quadril esquerdo. Ao raio x apresentou fratura da espinha ilíaca ântero superior à esquerda. Discussão: Essa lesão geralmente ocorre como resultado da contração súbita, vigorosa ou repetitiva do músculo sartório e tensor da fascia lata. Os sintomas mais comumente relatados são dor intensa associada a “estalos” na hemipelve afetada, edema, limitação funcional ipsilateral e equimoses. O tratamento é preferencialmente conservador, durando, em média, de 6 a 8 semanas. Já a cirurgia, é indicada para casos em que há desvio de mais de três centímetros ou com lesão neurovascular associada. Conclusão: Seu tratamento adequado, feito precocemente, torna-se importante na prevenção de lesões permanentes e complicações futuras. Na maioria das vezes, o tratamento e conservador, excetuando-se os casos de desvio fragmentário superior a três centímetros

Measurement of b jet shapes in proton-proton collisions at root s=5.02 TeV

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb(-1). To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the pythia and herwig++ event generators.Peer reviewe

Measurement of the azimuthal anisotropy of Y(1S) and Y(2S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The second-order Fourier coefficients (v(2)) characterizing the azimuthal distributions of Y(1S) and Y(2S) mesons produced in PbPb collisions at root s(NN) = 5.02 TeV are studied. The Y mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb(-1). The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range vertical bar y vertical bar < 2.4, in the transverse momentum interval 0 < pT < 50 GeV/c, and in three centrality ranges of 10-30%, 30-50% and 50-90%. In contrast to the J/psi mesons, the measured v(2) values for the Y mesons are found to be consistent with zero. (C) 2021 The Author(s). Published by Elsevier B.V.Peer reviewe

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe

Measurement of B-c(2S)(+) and B-c*(2S)(+) cross section ratios in proton-proton collisions at root s=13 TeV

Peer reviewe

Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG7, and are obtained from a fit to minimum-bias data collected by the CMS experiment at s=0.9, 7, and 13Te. The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the dat

Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015-2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.Peer reviewe

Observation of the Production of Three Massive Gauge Bosons at root s=13 TeV

The first observation is reported of the combined production of three massive gauge bosons (VVV with V = W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis is based on a data sample recorded by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 137 fb(-1). The searches for individualWWW, WWZ, WZZ, and ZZZ production are performed in final states with three, four, five, and six leptons (electrons or muons), or with two same-sign leptons plus one or two jets. The observed (expected) significance of the combinedVVV production signal is 5.7 (5.9) standard deviations and the corresponding measured cross section relative to the standard model prediction is 1.02(-0.23)(+0.26). The significances of the individual WWW and WWZ production are 3.3 and 3.4 standard deviations, respectively. Measured production cross sections for the individual triboson processes are also reported