| Summary: | São descritas as manifestações clinicas, laboratoriais e aspectos evolutivos de cinco pacientes procedentes de Codajás-Amazonas, atendidos no Instituto de Medicina Tropical de Manaus devido ao quadro de hepatopatia grave, com período médio de doença de quatro dias. Quatro destes pacientes evoluiram para óbito, com uma média de cinco dias desde o inicio dos pródromos. A sorologia para hepatite B mostrou que o Ag HBs estava presente em quatro e o Anti - HBc em todos. Dos pacientes que foram ao óbito, através da necropsia a histopatologia do fígado revelou quadro de hepatite fulminante em dois e de febre de Lábrea nos outros dois. We have described the clinical and laboratory manifestations and evolutiortal aspects of five patients from Codajás, state of Amazonas, Brasil. These patients were treated at the Instituto de Medicina Tropical de Manaus with a picture of acute liver failure with an average period of evolution of 4 days. Of these patients, four died, within an average time of five days since the prodromal phase. Serology for hepatitis B showed that HBAg was present in four, and the HBc antigen in all patients. An autopsy was perfomed on the four patients who died, and the liver histopathology revealed a picture of fulminant hepatitis in two, and Lábrea fever (febre negra), in the other two.
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