RESUMO
Here it is reported the virological dynamic of HBV and HCV, identified in the plasma, peripheral blood mononuclear cells and tissue liver, in a patient with chronic HBV-HCV coinfection. A treatment with pegylated Interferon plus Ribavirin determined a sustained virological response for HCV in all the three studied compartments, but a reactivation of chronic HBV infection was observed. In fact, while at the first observation HBV-DNA was detectable only in the liver tissue, after antiviral therapy it was detectable in all the three compartments; moreover this HBV reactivation was associated with a hepatic flare. Then, the patient was treated with Entecavir, which has been determining the clearance of HBV from the peripheral compartments (plasma and PBMC) until today.