Equinococose neotropicial: um estudo anatomopatológico para auxílio em uma sistematização diagnóstica correlacionada a morfologia

Abstract

Equinococcosis is a disease caused by cestodes of the Echinococcus genus, that can be found at the small intestin of animals like bush-dog and domestic dog. Men behave as an accidental host by the ingestion of eggs of the parasite. The larval forms mainly develop at the liver, and sometimes at the lung, causing a cronic diesease that can be easily mistaken by neoplasias. At the State of Pará, North Brazil, there is a great number of cases of this rare diesease, related to Echinococcus vogeli in the Amazon.This study describes six new cases, five in the the liver, and one at the lung, making description a about the kind of inflammatory cells. Fibrosis, giant-cells, calcification and the laminated layer with the typical cerebroid pattern. Rostellar hooklets did not were found. The laminated layer, is not enough to describe the species of Echinococcus, but allows to consider that the worm´s gender is Echinococcus. Even though the number of cases is too small for a statistical analysis, were observed cells that can justify why the disease has a cronic evolution. More works like this, adding more cases are important, because equinococcosis is a neglected diesese.