“…The hepatosplenic form of schistosomiasis mansoni is associated to an increased morbi-mortality rate of this disease (Tonelli et al 1987, Oréfice et al 1988, Brandt et al 1995. Pernambuco is one of the Brazilian states with a high mean prevalence -23% in the general population (Pereira et al 1993, Salomão 1995, Brandt et al 1999).…”