ABSTRACT
Abstract Purpose: To evaluate the concentration of transforming growth factor beta 1 (TGFB1) levels in a rat pleural effusion obtained by inoculation of intrapleural bacteria or turpentine through thoracentesis. Methods: Thirty-Nine Wistar rats were divided into three groups: Staphylococcus aureus (SA, n = 17); Streptococcus pneumoniae (SP, n = 12); and turpentine (control, n = 10). Pleural fluid was collected through ultrasound-guided thoracentesis 12 h, 24 h, and 36 h after instillation of bacteria or turpentine. Levels of TGFB1 were measured in pleural fluid. Results: At 12 h, mean TGFB1concentrations were 5.3450 pg/mL in the SA group, 5.3449 pg/mL in the SP group, and 5.3450 pg/mL in controls. At 24 h, they were 4.6700 pg/mL in the SA group, 4.6700 pg/mL in the SP group, and 4.6700 pg/mL in controls. At 36 h, they were 4.6699 pg/mL in the SA group and in control. No difference was observed among the groups in mean TGFB1concentration (p = 0.12); however, a significant intragroup reduction in mean TGFB1 was observed between 12 and 24 h (p < 0.01). Conclusion: The transforming growth factor beta 1 concentrations were not useful as a diagnostic tool or an early marker of infected pleural effusion.
Subject(s)
Animals , Male , Rats , Pleural Effusion/diagnosis , Empyema, Pleural/diagnosis , Transforming Growth Factor beta1/analysis , Pleural Effusion/complications , Bacteria/pathogenicity , Biomarkers/analysis , Empyema, Pleural/complications , Empyema, Pleural/microbiology , Rats, Wistar , Disease Models, AnimalABSTRACT
O Hamartoma Fibroso Infantil (HFI) é um tumor raro de característica benigna com representação histológica trifásica própria. Acomete tipicamente crianças de até 2 anos, predominantemente do sexo masculino. Apresenta usualmente diâmetro menor de 5 cm, ocorrendo classicamente em áreas como a parede torácica, braços, axilas e região inguinal, porém já foram descritos acometimentos de estruturas genitais, cabeça, pescoço e estruturas distais. Em sua avaliação, patologias como fibrolipoma, lipoblastoma, fibrosarcoma e rabdomiosarcoma devem sempre ser consideradas como diagnóstico diferencial. Atualmente, em sua abordagem, exames de imagem como ultrassonografia e ressonância nuclear magnética vem tornando-se importantes ferramentas no processo investigativo e preparatório à terapêutica empregada, que baseia-se na excisão da lesão. Apresentamos a seguir um relato de caso de criança com 4 meses de idade com lesão expansiva em braço esquerdo diagnosticada como HFI após investigação, excisão e análise histopatológica.
Fibrous hamartoma of infancy (FHI) is a rare, benign tumor with a characteristic three-phase histological pattern. It typically affects children up to two years of age, predominantly male. It is usually smaller than 5 cm in diameter, occurring classically in areas such as the chest wall, arms, underarms and groin, but it may as well affect genital structures, head, neck and distal structures. In its evaluation, disorders like fibrolipoma, lipoblastoma, fibrosarcoma and rhabdomyosarcoma should always be considered as a differential diagnosis. Currently, in its approach, imaging tests such as ultrasound and magnetic resonance imaging have become important tools in the investigative and preparatory process for the treatment to be used, which is based on excision of the lesion. The following is a case report of a 4-month old with an expansive lesion in the left arm diagnosed as FHI after investigation, excision and histopathology.