These results suggest that GLUT-1 may be involved in the metabolic regulation of glucose in odontogenic lesions studied. In addition, CA IX appears to influence the development of AM, OK, and DC which can explain the differences their biological behavior.
The calcifying epithelial odontogenic tumor (CEOT) is a rare benign epithelial odontogenic neoplasm of slow growth that is locally aggressive and tends to invade bone and adjacent soft tissue. Here is reported the case of a 21-year-old female patient with a CEOT in the left mandibular posterior region. The computerized tomography in coronal plane revealed a hypodense lesion in the posterior region of the left mandibular body with hyperdense areas inside and was associated with element 37. An incisional biopsy of the lesion was performed and the histopathological analysis revealed the presence of layers of epithelial odontogenic cells that formed prominent intercellular bridges. A large quantity of extracellular, eosinophilic, and amyloid-like material and an occasional formation of concentric calcifications (Liesegang rings) were also found. The histopathological diagnosis was a Pindborg tumor. Resection of the tumor with a safety margin was performed and after 6 months of follow-up there has been no sign of recurrence of the lesion.
Reliability of digital panoramic radiography in the diagnosis of carotid artery calcifications * Confiabilidade da radiografia panorâmica digital no diagnóstico de calcificações na artéria carótida Brasileiro Junior VL, Luna AHB, Sales MAO, Rodrigues TLC, Sarmento PLFA, Mello Junior CF. Reliability of digital panoramic radiography in the diagnosis of carotid artery calcifications. Radiol Bras. 2014 Jan/Fev;47(1):28-32. Abstract ResumoObjective: The present study evaluated the reliability of digital panoramic radiography in the diagnosis of carotid artery calcifications. Materials and Methods: Thirty-five patients under high-risk for development of carotid artery calcifications who had digital panoramic radiography were referred to undergo ultrasonography. Thus, 70 arteries were assessed by both methods. The main parameters utilized to evaluate the panoramic radiography reliability in the diagnosis of carotid artery calcifications were accuracy, sensitivity, specificity and positive predictive value of this method as compared with ultrasonography. Additionally, the McNemar's test was utilized to verify whether there was a statistically significant difference between digital panoramic radiography and ultrasonography. Results: Ultrasonography demonstrated carotid artery calcifications in 17 (48.57%) patients. Such individuals presented with a total of 29 (41.43%) carotid arteries affected by calcification. Radiography was accurate in 71.43% (n = 50) of cases evaluated. The degree of sensitivity of this method was 37.93%, specificity of 95.12% and positive predictive value of 84.61%. A statistically significant difference (p < 0.001) was observed between the methods evaluated in their capacity to diagnose carotid artery calcifications. Conclusion: Digital panoramic radiography should not be indicated as a method of choice in the investigation of carotid artery calcifications.Keywords: Carotid artery calcification; End-stage renal disease; Panoramic radiography; Ultrasonography.Objetivo: O presente estudo avaliou a confiabilidade da radiografia panorâmica digital no diagnóstico de calcificações na artéria carótida. Materiais e Métodos: Trinta e cinco pacientes de alto risco para o desenvolvimento de calcificações na artéria carótida que tinham a radiografia panorâmica digital foram encaminhados para realização do exame de ultrassonografia. Assim, 70 artérias foram avaliadas pelos dois exames. Os principais parâmetros utilizados para avaliar a confiabilidade da radiografia panorâmica no diagnóstico de calcificações na artéria carótida foram a precisão, a sensibilidade, a especificidade e o valor preditivo positivo desse método quando comparado à ultrassonografia. Além disso, o teste de McNemar foi utilizado para verificar se existia diferença estatisticamente significante entre a radiografia panorâmica digital e ultrassonografia. Resultados: De acordo com a ultrassonografia, 17 (48,57%) pacientes apresentavam calcificações na artéria carótida. Esses indiví-duos apresentavam um total de 29 (41,43%) artérias carótidas a...
<p>O objetivo deste trabalho foi avaliar a percepção dos alunos do ensino técnico em relação à modalidade de Educação a Distância (EaD). Participaram do estudo 61 discentes, distribuídos em dois grupos: G1 (n=32), composto por alunos de cursos presenciais, e G2 (n=29), composto por alunos de cursos de EaD. Para a coleta de dados, foi utilizado um questionário já validado, que verificou a percepção dos alunos sobre a modalidade de EaD. As informações coletadas revelaram que 28 participantes do G1 (87,5%) e 16 do G2 (55,2%) concordavam em parte ou totalmente que os cursos de EaD apresentavam menor qualidade de ensino quando comparados aos cursos presenciais, sendo essa diferença percentual entre os grupos estatisticamente significante (p=0,002). Em seguida, verificou-se a percepção dos alunos de EaD quanto ao acesso ao professor e às atividades realizadas na plataforma Moodle. Com relação ao contato com os docentes, apenas 3 alunos (10,3%) consideraram esse contato fácil. Quando analisadas as atividades online, 26 (89,7%) classificaram estas como regulares, boas ou ótimas. Diante do exposto, pode-se concluir que a maioria dos discentes considerava que os cursos de EaD tinham menor qualidade quando comparados aos cursos presenciais, entretanto esta percepção é significativamente menor entre os alunos da modalidade de ensino a distância.</p>
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