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Id: biblio-1101295 LILACS-Express
Autor: Avetikov, David Solomonovich; Buchanhenko, Olga Petrivna; Shlykova, Oksana Anatoliivna; Izmajlova, Olga Vitaliivna; Lokes, Kateryna Petrivna; Klitynska, Oksana Vasylivna; Vesnina, Ludmila Eduardivna; Kajdashev, Igor Petrovich.
Título: Presence of Type 1 Collagen Alpha-2 (COL1A2) (rs42524) Gene Polymorphism and Scar Tissue Formation in Different Areas of Head and Neck
Fonte: Pesqui. bras. odontopediatria clín. integr;20:e4422, 2020. tab.
Idioma: en.
Resumo: Abstract Objective: To determine the effect type I collagen gene polymorphism alpha-2 (COL1A2) (rs42524) on the formation of scar tissue that is localized in the head and neck areas. Material and Methods: Sixty patients with scars in different areas of the head and neck were examined. The patients were divided into four subgroups, according to the types of scarring: G I: 15 patients with normotrophic scars; G ІІ: 15 patients with atrophic scars; G ІІІ: 15 patients with hypertrophic scars; and G IV: 15 patients with keloid scars. The age of patients ranged from 17 to 54 years. The single-nucleotide polymorphic site of the COL1A2 (rs42524) gene was detected by a polymerase chain reaction and subsequent analysis of restriction fragment lengths. Pearson's chi-squared test with Yates's correction and Fischer's exact test were used. Results: There were no significant changes between the control and basic groups (p=0.83) at analyzing the frequencies of G and C alleles. For the G allele, the calculation of odds ratio between the basic and control groups was 0.93 at 95% confidence interval (CI) (0.50-1.75), for the C allele - OR was 1.07 at 95% CI (0.57-2.01). Conclusion: Our studies may indirectly indicate the activation of the skin's protective reaction to physiological scarring and dosed scar formation in different areas of the head and neck.
Descritores: Polimorfismo Genético
Reação em Cadeia da Polimerase
Cicatriz Hipertrófica
Colágeno Tipo I
Cabeça
-Ucrânia
Distribuição de Qui-Quadrado
Intervalos de Confiança
Estatísticas não Paramétricas
Limites: Humanos
Masculino
Feminino
Adolescente
Adulto
Pessoa de Meia-Idade
Tipo de Publ: Estudo Comparativo
Responsável: BR1264.1 - Biblioteca Setorial Prof Alberto M Campos


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Id: biblio-901299
Autor: Sandoval-Martínez, Diana Katherine; Centeno-Hurtado, Katherine Tatiana.
Título: Presentación de un caso de siameses cefalópagos / A case report of cephalopagus siamese
Fonte: Rev. cuba. obstet. ginecol;43(2):1-8, abr.-jun. 2017. ilus.
Idioma: es.
Resumo: Se denominan siameses a aquellos gemelos que comparten estructuras anatómicas en grado variable. La incidencia varía entre 1:50 000 a 1:100 000 embarazos, 1:4 de los casos fallecen in utero y 40-60 por ciento mueren poco después del parto.Los hallazgos en autopsias médico-científicas de gemelos unidos cefalópagos, que son aquellos que presentan fusión cefálica con dos hemicaras, son el cuarto tipo de siameses en ocurrencia y su incidencia está estimada en 1 por cada 3'000.000 de embarazos o 1/58 siameses. El objetivo es presentar los hallazgos de una autopsia médico-científica de gemelos unidos cefalópagos. Se trata de gemelos cefalópagos, con terminación de embarazo por incompatibilidad con la vida extrauterina. Presentan cordón umbilical único de cinco vasos, tenían cráneos fusionados a nivel frontofacial con dos caras en lados opuestos de la cabeza (Janiceps), con fusión ventro-ventral de los ejes somáticos hasta debajo del ombligo sobre la pelvis, con sistemas respiratorios, cardiaco y genitourinario independientes, el sistema digestivo superior esta fusionado hasta el intestino medio, con duplicación a partir de la tercera porción del duodeno. Los gemelos siameses cefalópagos no son los más infrecuentes, pero es difícil encontrar series de casos y revisiones sistemáticas de sus características y patogénesis en Latinoamérica. Son escasas las estadísticas sobre siameses y no se ha descrito previamente ningún caso como éste. Se hace necesaria la realización de estudios de autopsias para mejorar la descripción y caracterización de estos casos y poder determinar si existen otras condiciones asociadas además de las teorías de unión embriológica(AU)

It is denominated siamese to those twins that share anatomical structures to a variable degree. The incidence varies between 1/50.000 and 1/100.000 pregnancies, 1:4 of the cases die in the uterus and 40-60 percent die shortly after birth. Findings in a medical-scientific autopsies of conjoined cephalopagus twins, those that presenting cephalic fusion with two hemi faces, are the fourth type of Siamese in occurrence and their incidence is estimated in 1 every 3´000.000 pregnancies or 1/58 siamese. It is about cephalopagus twins, with termination of pregnancy due to incompatibility with extrauterine life. They presented a five vessels common umbilical cord, fused craniums at frontofacial level with two faces in opposed sides of the head (Janiceps), ventro-ventral fusion of the somatic axis until below the umbilicus and above the pelvis, independent respiratory, cardiac and genitourinary systems. The superior digestive system was fused until the medium intestine, with duplication parting from the third portion of the duodenum. Conjoined cephalopagus twins are not the most frequent but it is hard to find a series of cases and systemic revisions of their characteristics and pathogenesis in Latin America. Statistics on Siamese twins are scarce and it has not been previously described any case like this one. Autopsy studies becomes necessary to improve the description and characterization of these cases and to determine the existence of any other associated conditions different to those of the embryologic union theory(AU)
Descritores: Gêmeos Unidos/patologia
Cabeça/anormalidades
Limites: Humanos
Feminino
Gravidez
Adulto
Tipo de Publ: Estudo em Gêmeos
Responsável: CU1.1 - Biblioteca Médica Nacional


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Id: biblio-1138994
Autor: Nazario Dolz, Ana María; Castillo Toledo, Luis; Rodríguez Fernández, Zenén.
Título: Fístula quilosa posoperatoria / Postoperative chylous fistula
Fonte: Rev. cuba. med. mil;49(2):e381, abr.-jun. 2020. fig.
Idioma: es.
Resumo: Introducción: La fístula quilosa posoperatoria debida a lesión iatrogénica del conducto torácico es una complicación infrecuente y grave de la cirugía de cabeza y cuello. Objetivo: Describir las opciones de tratamiento de la fístula quilosa cervical posquirúrgica. Caso clínico: Se presenta un paciente de 18 años de edad con diagnóstico de linfangioma quístico de la región lateral izquierda del cuello, intervenido en el Servicio de Cirugía General del Hospital "Mnazi Mmoja", de Zanzíbar, Tanzania. Durante la evolución posoperatoria se constató una fístula quilosa de bajo débito la cual resolvió mediante tratamiento médico. El enfermo egresó curado a los 28 días después de la intervención quirúrgica. Conclusión: El tratamiento conservador es efectivo en la mayoría de las fístulas quilosas cervicales de bajo débito, mientras que en las de débito alto la cirugía ofrece una rápida resolución, aunque no existe consenso en torno al momento ideal para realizarla(AU)

Introduction: Postoperative chylous fistula due to iatrogenic thoracic duct injury is an infrequent and serious complication of head and neck surgery. Objective: To describe the treatment options of postoperative cervical chylous fistula. Clinical case: It was presented an 18-year-old patient with diagnosis of cystic lymphangioma of the left lateral region of the neck, which was removed in the General Surgery Service of the National Hospital Mnazi Mmoja of Zanzibar, Tanzania. During the postoperative evolution, a low-output chylous fistula was found and resolved by medical treatment. The patient withdrew cured at 28 days after the surgical intervention. Conclusion: Conservative treatment is effective in the majority of low-out put cervical chylous fistulas, while in high-debit, surgery offers a rapid resolution, although there is no consensus about the ideal time to perform it(AU)
Descritores: Procedimentos Cirúrgicos Operatórios
Linfangioma Cístico
Fístula
Cabeça
Pescoço
Limites: Humanos
Masculino
Adolescente
Responsável: CU1.1 - Biblioteca Médica Nacional


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Id: biblio-1143346
Autor: Tencatt, Luiz Fernando Caserta; Santos, Sérgio Alexandre dos; Britto, Marcelo Ribeiro de.
Título: Taxonomic review of the typical long-snouted species of Corydoras (Siluriformes: Callichthyidae) from the río de La Plata basin
Fonte: Neotrop. ichthyol;18(4):e200088, 2020. tab, graf.
Idioma: en.
Projeto: Conselho Nacional de Desenvolvimento Científico e Tecnológico; . Conselho Nacional de Desenvolvimento Científico e Tecnológico; . Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro; . Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
Resumo: The typical long-snouted species of Corydoras from the río de La Plata basin were reviewed herein, and the previously proposed synonymy of Corydoras ellisae was corroborated. Corydoras areio and C. aurofrenatus are diagnosed from their congeners, excluding those in lineage 1, by the following features: temporal sensory canal in sphenotic with two pores; upper tooth plate of branchial arch with three or four series of teeth; fleshy flap at mouth corner. Corydoras areio differs from all lineage 1 congeners by having infraorbital 2 with relatively wider posterior laminar expansion; absence of large patches of black pigmentation on the body and absence of conspicuous concentration of dark brown or black chromatophores on anterior portion of the dorsal fin; and presence of blotches on flanks not aligned in longitudinal series. Corydoras aurofrenatus differs from all lineage 1 congeners by having ventral surface of head and trunk densely covered by small, not coalescent platelets; middle portion of flank with two or three dark brown or black patches (below the dorsal-fin, below the adipose-fin base, and on the caudal peduncle base, diffuse and variably present), patches decreasing in size posteriorly; poorly developed fleshy flap at the corner of mouth; anteroventral portion of cleithrum exposed.(AU)

As espécies típicas de focinho longo de Corydoras da bacia do río de La Plata foram revisadas, e a sinonímia proposta anteriormente de Corydoras ellisae foi corroborada. Corydoras areio e C. aurofrenatus são diagnosticadas de seus congêneres, excluindo aquelas da linhagem 1, pelas seguintes características: canal sensorial temporal no esfenótico com dois poros; placa dentária superior do arco branquial com três ou quatro séries de dentes; aba carnosa no canto da boca. Corydoras areio difere de todos os congêneres da linhagem 1 pelo infraorbital 2 com expansão laminar posterior relativamente mais ampla; ausência de grandes manchas de pigmentação preta no corpo e ausência de concentração conspícua de cromatóforos marrom-escuros ou pretos na porção anterior da nadadeira dorsal; presença de manchas laterais não alinhadas em série longitudinal. Corydoras aurofrenatus difere de todas as congêneres da linhagem 1 pela superfície ventral da cabeça e do tronco densamente coberta por pequenas plaquetas não coalescentes; porção média lateral com duas ou três manchas marrom-escuras ou pretas (abaixo da nadadeira dorsal, abaixo da base da nadadeira adiposa, e na base do pedúnculo caudal, difusa e variavelmente presente), manchas diminuindo de tamanho posteriormente; aba carnosa pouco desenvolvida no canto da boca; porção anteroventral do cleitro exposta.(AU)
Descritores: Peixes-Gato/anatomia & histologia
Peixes-Gato/classificação
Cabeça
-Linhagem
Responsável: BR68.1 - Biblioteca Virginie Buff D'Ápice


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Id: biblio-1021411
Autor: Brofman, Carolina; Algieri, Agustín D; Mendiguren, Milagros Bellia; Donatti, Lucía; Ferrante, Soledad; Algieri, Rubén D.
Título: Drenaje venoso de la cabeza y el cuello / Venous drainage of the head and neck
Fonte: Hosp. Aeronáut. Cent;13(2):105-111, 2018.
Idioma: es.
Resumo: Introducción: El sistema venoso de la cabeza y el cuello presenta formaciones plexiformes constituidas por venas que no siguen el trayecto de las arterias. Dicho sistema venoso ha sido objeto de estudio de autores clásicos. Se describen plexos venosos craneo-cervico faciales que contribuyen a la formación del sistema principal vertebral y yugular. El conocimiento de la conformación del drenaje y de sus relaciones anatómicas es fundamental para el abordaje de los vasos venosos para la infusión de sustancias para el tratamiento de los pacientes. Metodología: Se realizó una búsqueda bibliográfica en diferentes portales de internet Google Scholar, Scielo y Pubmed utilizando el lenguaje "MeSH". Se recopilaron también textos clásicos y se realizo la lectura crítica, dividiendo los artículos en número de 30 en Primarios, Secundarios y Terciarios. Desarrollo: El plexo occipitovertebral se encuentra en la región cervical posterior. Dicho plexo se encuentra íntimamente asociado a las articulaciones occipito-vertebrales. Sus afluentes corresponden a cuatro venas raquídeas, dos a cada lado. Las mismas se evidencian al remover el arco posterior del atlas junto a las láminas del axis, emergiendo de la confluencia occipitoatloidea y atlantoaxoidea. El plexo latero-faringeo se encuentra ubicado en la región correspondiente a la fosa infra-temporal. El drenaje venoso queda dividido por los planos musculares en tres sectores plexiformes. El primero de ellos se ubica entre cara medial de la rama de la mandíbula junto al músculo temporal. El segundo, lo hace profundo a este último pero superficial al músculo pterigoideo medial. Completando el drenaje venoso con el tercer patrón plexiforme ubicado en relación intrínseca con la porción infra-temporal del ala mayor del hueso esfenoides. Al abordar la región parotido-maseterina se evidencia un grupo de venas conformado por dos masetéricas anteriores y entre tres y cinco afluentes glandulares. El tercer sector plexiforme se ubica en la cara infra-temporal del ala mayor del esfenoides situada horizontalmente, extendiéndose hasta la cresta infra-temporal; cresta ósea que separa dicha parte del esfenoides de la cara temporal vertical constituído por dos venas temporales profundas accesorias. El sistema de la vena yugular externa comprende a la vena yugular externa propiamente dicha y la vena yugular anterior, que es una de la ramas colaterales. El sistema de la vena yugular interna se conforma a partir de las venas intra-craneanas, venas del encéfalo y de los senos venosos craneales. Conclusión: El conocimiento de todo el drenaje venoso de la cabeza y el cuello es extenso y por ese motivo, pobremente estudiado. Los vasos afluentes o comunicantes de los plexos, aunque insignificantes pueden ser fundamentales en el desarrollo de patologías, ya que obstruyen el normal funcionamiento de la circulación.

Introduction: The venous system of the head and neck presents plexiform formations constituted by veins that do not follow the course of the arteries. This venous system has been studied by classical authors. Facial cranio-cervical venous plexuses are described that contribute to the formation of the vertebral and jugular main system. The knowledge of the conformation of the drainage, of its anatomical relations is fundamental for the approach of the venous vessels for the infusion of substances for the treatment of the patients. Methodology: A bibliographic search was carried out in different internet portals Google Scholar, Scielo, Pubmed using the "MeSH" language. Classical texts were also compiled and the critical reading was carried out by dividing the articles, in number of 30 in Primary, Secondary and Tertiary. Development: The occipitovertebral plexus is located in the posterior cervical region. This plexus is intimately associated with the occipito-vertebral joints. Its tributaries correspond to four spinal veins, two on each side. They are evident when the posterior arch of the atlas is removed next to the laminae of the axis, emerging from the occipitoatloid and atlantoaxial confluence. The latero-pharyngeal plexus is located in the region corresponding to the infra-temporal fossa. The venous drainage is divided by the muscular planes into three plexiform sectors. The first of these is located between the medial aspect of the branch of the jaw next to the temporal muscle. The second makes it deep to the latter but superficial to the medial pterygoid muscle. Completing the venous drainage with the third plexiform pattern located in intrinsic relation with the infra-temporal portion of the greater wing of the sphenoid bone. When addressing the parotid-maseterine region, a group of veins is evident, consisting of two anterior masterers and between three and five glandular tributaries. The third plexiform sector is located on the infra-temporal side of the greater wing of the sphenoid located horizontally, extending to the infra-temporal crest; bony crest that separates said part of the sphenoid from the vertical temporal face constituted by two accessory temporary deep veins. The external jugular vein system comprises the external jugular vein itself and the anterior jugular vein, which is one of the collateral branches. The internal jugular vein system is formed from intra-cranial veins, veins of the brain and cranial venous sinuses. Conclusion: The knowledge of all the venous drainage of the head and neck is extensive and for that reason, poorly studied. The affluent or communicating vessels of the plexuses, although insignificant, can be fundamental in the development of pathologies since they obstruct the normal functioning of the circulation.
Descritores: Veias/anatomia & histologia
Cabeça/anatomia & histologia
-Ultrassonografia/tendências
Anatomia/educação
Veias Jugulares/anatomia & histologia
Tipo de Publ: Revisão
Responsável: AR295.1 - Biblioteca Dr Anibal E Inchausti


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Id: biblio-910648
Autor: Pérez Alisedo, Francisco; Luna Corzo, Gisela A; Fernández, Samara J; Trinchinetti, Constanza M.
Título: Abscesos profundos de cabeza y cuello: nuestra experiencia en dos años / Deep head and neck abscesses: Our experience in two years
Fonte: Hosp. Aeronáut. Cent;11(2):100-4, 2016. ilus, tabl, graf.
Idioma: es.
Resumo: Introducción: Los abscesos son procesos de origen infeccioso, que forman una colección de material purulento y necrótico, que pueden diseminarse a través de diferentes planos. Los abscesos de cabeza y cuello se clasifican en superficiales y profundos. El manejo de estas infecciones depende de varios factores. El objetivo de este estudio es describir nuestra experiencia con los abscesos profundos de cabeza y cuello. Objetivos: Describir nuestra experiencia con los pacientes que fueron atendidos por abscesos profundos de cabeza y cuello en el Sistema de Salud de Malvinas Argentinas en octubre de 2014 y octubre de 2016. Material y Método: Estudio longitudinal, retrospectivo y observacional con base en la revisión de las historias clínicas de todos los pacientes con diagnóstico de absceso profundo de cabeza y cuello en el sistema de salud de Malvinas Argentinas durante dos años. Las variables fueron tabuladas y analizadas por los autores. Resultados: Todos los pacientes fueron internados con tratamiento antibiótico endovenoso. En 13 pacientes (56.52%) fue necesaria una intervención quirúrgica para su drenaje, 5 presentaron drenaje espontáneo (21,74%) y 5 respondieron únicamente al tratamiento médico (21,74%). El promedio de días de internación fue de 6,74 días. Se fueron de alta con buena evolución clínica 22 pacientes (95,66%) y un paciente falleció al 4° día de internación. Conclusiones: El absceso profundo en cabeza y cuello es una patología con manifestaciones clínicas variadas, existiendo muchas veces una disociación clínico-imagenológica. Al ser una patología potencialmente mortal es necesaria la internación para un tratamiento médico endovenoso, control clínico y un eventual drenaje quirúrgico.

Introduction: Abscesses are processes of infectious origin, which form a collection of purulent and necrotic material, which can be disseminated through different planes. Head and neck abscesses are classified as superficial and deep. Management of these infections depends on several factors. The aim of this study is to describe our experience with deep head and neck abscesses. Objectives: to describe our experience with Patients who were treated for Deep head and neck abscesses in argentine Malvinas Health system in October 2014 and October 2016 Material and method: Longitudinal, retrospective and observational study based on the review of the medical records of all patients diagnosed with deep head and neck abscess in the Malvinas Argentinas health system for two years. The variables were tabulated and analyzed by the authors. Results: All patients were hospitalized with intravenous antibiotic treatment. In 13 Patients (56.52%), surgical intervention was required for drainage, 5 had spontaneous drainage (21.74%) and 5 only had medical treatment (21.74%). The average number of hospital days was 6.74 days. Twenty two patients (95.66%) went on a good clinical course and one patient died on the 4th day of hospitalization. Conclusions: Deep Abscess in the head and neck is a pathology with varied clinical manifestations, and there is often a clinical -Imaging dissociation. Being a potentially deadly pathology, hospitalization for intravenous medical treatment, clinical control and eventual surgical drainage is necessary.
Descritores: Abscesso/terapia
-Cabeça
Pescoço
Limites: Humanos
Tipo de Publ: Estudo de Avaliação
Responsável: AR295.1 - Biblioteca Dr Anibal E Inchausti


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Id: biblio-888188
Autor: Farah, Michelle de Lima; Santinello, Murillo; Carvalho, Luis Eduardo Morato Rebouças de; Uesugui, Carlos Fumiaki; Barcellos, Ronaldo Boaventura.
Título: Using a smartphone as a tool to measure compensatory and anomalous head positions / Uso do smartphone como ferramenta para medir a posição compensatória e anômala da cabeça
Fonte: Arq. bras. oftalmol;81(1):30-36, Jan.-Feb. 2018. graf.
Idioma: en.
Resumo: ABSTRACT Purpose: To describe a new method for measuring anomalous head positions by using a cell phone. Methods: The photo rotation feature of the iPhone® PHOTOS application was used. With the patient seated on a chair, a horizontal stripe was fixed on the wall in the background and a sagittal stripe was fixed on the seat. Photographs were obtained in the following views: front view (photographs A and B; with the head tilted over one shoulder) and upper axial view (photographs C and D; viewing the forehead and nose) (A and C are without camera rotation, and B and D are with camera rotation). A blank sheet of paper with two straight lines making a 32-degree angle was also photographed. Thirty examiners were instructed to measure the rotation required to align the reference points with the orthogonal axes. In order to set benchmarks to be compared with the measurements obtained by the examiners, blue lines were digitally added to the front and upper view photographs. Results: In the photograph of the sheet of paper (p=0.380 and a=5%), the observed values did not differ statistically from the known value of 32 degrees. Mean measurements were as follows: front view photograph A, 22.8 ± 2.77; front view B, 21.4 ± 1.61; upper view C, 19.6 ± 2.36; and upper view D, 20.1 ± 2.33 degrees. The mean difference in measurements for the front view photograph A was -1.88 (95% CI -2.88 to -0.88), front view B was -0.37 (95% CI -0.97 to 0.17), upper view C was 1.43 (95% CI 0.55 to 2.24), and upper view D was 1.87 (95% CI 1.02 to 2.77). Conclusion: The method used in this study for measuring anomalous head position is reproducible, with maximum variations for AHPs of 2.88 degrees around the X-axis and 2.77 degrees around the Y-axis.

RESUMO Objetivo: Descrever novo método de medida da posição anômala da cabeça (PAC) usando celular. Métodos: Foi utilizado o recurso de rotação de fotografias do aplicativo fotos do iPhone®. Com paciente em uma cadeira, foram fixadas duas faixas, uma horizontal, na parede ao fundo e outra sagital sobre o assento. Fotografias: frontal (1 A e 1 B), com a cabeça inclinada sobre um ombro, e superior (1 C e 1 D), visualizando testa e nariz. Também fotografada uma folha sulfite com duas retas desenhadas formando um ângulo de 32º. Trinta examinadores foram orientados a mensurar a rotação necessária para alinhar os pontos de referência com os eixos ortogonais. Para estabelecer medidas de referência a serem comparadas com aquelas obtidas pelos examinadores, foram acrescentadas digitalmente linhas azuis nas fotos frontal e superior. Resultados: Na foto da folha de papel (p=0,380 e a=5%), os valores observados não diferem estatisticamente do valor conhecido de 32º. Média das medidas: foto frontal 1A, 22,8 ± 2,77, frontal 1B, 21,4 ± 1,61, superior 1C, 19,6 ± 2,36 e superior 1D, 20,1±2,33. A média das diferenças das medidas na foto frontal 1A foi de -1,88 (IC 95% -2,88 a -0,88), frontal 1B de -0,37 (IC 95% -0,97 a 0,17), superior 1C de 1,43 (IC 95% 0,55 a 2,24) e superior 1D foi 1,87 (IC 95% 1,02 a 2,77). Conclusões: O método utilizado neste estudo para medida da posição anômala da cabeça é reprodutível e apresenta variação máxima de 2,88º nas posições anômalas da cabeça ao redor do eixo X e 2,77º do Y.
Descritores: Postura/fisiologia
Software
Fotografação/normas
Smartphone
Cabeça/diagnóstico por imagem
-Padrões de Referência
Valores de Referência
Rotação
Fatores de Tempo
Fotografação/métodos
Variações Dependentes do Observador
Reprodutibilidade dos Testes
Limites: Humanos
Tipo de Publ: Estudo de Avaliação
Responsável: BR1.1 - BIREME


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Id: lil-694372
Autor: Tobar Bonilla, Luz Nelly.
Título: Edición especial-Cirugía de cabeza y cuello / Special edition-head and neck surgery
Fonte: Acta otorrinolaringol. cir. cabeza cuello;41(1):16-l7, ene.-mar. 2013.
Idioma: es.
Descritores: Cabeça/cirurgia
Pescoço/cirurgia
Otolaringologia/história
Otolaringologia/métodos
Otolaringologia/tendências
Limites: Humanos
Tipo de Publ: Editorial
Responsável: CO361.9


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Id: biblio-1119047
Autor: GARCIA, Elisa Queiroz; ZUANON, Jansen.
Título: Sexual dimorphism in the electric knifefish, Gymnorhamphichthys rondoni (Rhamphichthyidae: Gymnotiformes)
Fonte: Acta amaz;49(3):213-220, jul. - set. 2019.
Idioma: en.
Resumo: Sexual dimorfism refers to morphological differences between males and females of a species. It may be a result of different selection pressures acting on either or both sexes and may occur in any sexually-reproducing dioecious species, including fishes. We analyzed 63 females and 63 adult males of Gymnorhamphichthys rondoni (Gymnotiformes) collected by us or deposited in museum collections. Sex was identified through abdominal dissection. We measured length from snout to posterior end of anal-fin, anal-fin length, distance from anus to anal-fin origin, distance from genital papilla to anal-fin origin, body width at beginning of anal-fin, and head length. Morphometric data submitted to a Principal Component Analysis (PCA) grouped males and females according to variables related to body size (along the first component) and to head length and body height along the second and third components. Females were larger than males, whereas males had proportionally larger heads and higher bodies than females. The urogenital papilla of males and females showed differences in shape, size and relative position on the body. The female papilla was elongated horizontally, larger than that of males, and was located on a vertical line below the eye, while the papilla of the males was vertically elongated and located on a vertical line below the operculum. To our knowledge, this is the first recorded case of sexual dimorphism in a species of Rhamphichthyidae, a condition that is now known in all the currently recognized families of Gymnotiformes. (AU)
Descritores: Peixe Elétrico
Caracteres Sexuais
Gimnotiformes
Cabeça
Responsável: BR6.1 - BCS - Biblioteca de Ciências da Saúde


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Id: lil-726880
Autor: Martí Samper, Alejandro.
Título: Paraganglioma metastásico: imagen con 18F-fluordesoxiglucosa-tomografía por emisión de positrones / Metastatic paraganglioma: image with F18-FDG- PET/CT
Fonte: Rev. colomb. cancerol;17(4):162-165, oct.-dic. 2013. ilus.
Idioma: es.
Resumo: Los paragangliomas son tumores neuroendocrinos poco frecuentes que pueden originarse en cualquier lugar a lo largo del sistema paraganglial. La mayoría son benignos y de progresión lenta, sin embargo un 10% aproximadamente presentan metástasis. El 80-85% de estos tumores surgen de la médula suprarrenal y se nombran feocromocitomas, mientras que el 15-20% se encuentran en tejidos cromafines a nivel extra-adrenal y se conocen como paragangliomas. Tienen variantes hereditarias (25%), también pueden manifestarse con multifocalidad. Pueden aparecer en cualquier parte del sistema paraganglial y estar asociados con el tejido nervioso simpático (médula adrenal, el órgano de Zuckerkandl, u otras células cromafines que puedan persistir más allá de la embriogénesis), o con el sistema nervioso parasimpático (quimiorreceptores, que se encuentra principalmente en cabeza y cuello). Por lo tanto, los paragangliomas pueden estar distribuidos desde la base del cráneo hasta el sacro. Las imágenes de medicina nuclear ayudan a delinear plenamente la enfermedad.

The paragangliomas are a rare neuroendocrine group of tumors that can occur anywhere along paraganglia system. Most of them are benign and of slow progression, however about 10% of them will have metastases. The large majority (80-85%) of these tumors arise from the adrenal medulla and are called pheochromocytomas, while 15-20% originate in chromaffin tissue at extra-adrenal sites, and are called paragangliomas. There are inherited variants (25%), and the disease may also present with multifocality. They can appear anywhere in paraganglia system and may be associated with sympathetic nervous tissue (adrenal medulla, the organ of Zuckerkandl, or other chromaffin cells that can persist beyond embryogenesis), or the parasympathetic nervous system (chemoreceptors, which are found mainly in the head and neck). Therefore, paragangliomas can be distributed from the base of the skull to the sacrum. Nuclear medicine imaging can help to fully define the disease. © 2013 Instituto Nacional de Cancerología. Published by Elsevier España, S.L. All rights reserved.
Descritores: Glomos Para-Aórticos
Paraganglioma
Medula Suprarrenal
Tomografia por Emissão de Pósitrons
Metástase Neoplásica
-Sistema Nervoso Parassimpático
Feocromocitoma
Tumores Neuroendócrinos
Base do Crânio
Cabeça
Pescoço
Neoplasias
Medicina Nuclear
Limites: Humanos
Tipo de Publ: Relatório Técnico
Responsável: CO40.1 - Biblioteca Médica



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