Alterações hepatobiliares em gatos domésticos (Felis catus domesticus) parasitados por Platynosomum illiciens (Braun, 1901) Kossack, 1910 observadas através do exame radiográfico, ultra-sonográfico e de tomografia computadorizada. / Hepatobiliary changes in domestic cats (Felis catus domesticus) infected by Platynosomum illiciens (Braun, 1901) Kossack, 1910 observed through radiography, ultrasound and computed tomography.

Felipe Delorme Azevedo

Platynosomum illiciens (Braun 1901) Kossack, 1910, considered by some authors as synonymy of Platynosomum fastosum and Platynosomum concinnum, is the most important trematode found in cats of tropical and subtropical areas, and its prevalence can reach up to 85%. In Brazil it was already found at different localities, but State of Rio de Janeiro is where it presents a higher prevalence and could be found in 56% of the cats. Due to the P. illiciens diagnosis is being done exclusively through the discovery of eggs of this parasite by fecal examination, and this is considered being little sensible, it is necessary the study of complementary tools of diagnosis for the parasite and the hepatic alterations possibly determined by this parasite. Therefore, radiology, ultrasound and computed tomography were used for the evaluation of alterations caused by P. illiciens in order to evidence alterations that aid in the diagnosis of this parasitosis or even to evidenced major alterations caused by the platynosomiasis. A triage was accomplished with 13 animals searching for the presence of P. illiciens eggs in feces. Eight positive cats (61.54%) were found, and submitted to the proposed image diagnosis technics, except for tomography which only seven animals were submitted. The radiologic examination evidenced five animals with enlargement of the liver; one animal was with a normal liver and in two animals the hepatic limits were not observed through the x-ray. In ultrasound scanning, six animals was identified hepatomegaly and in regard of the hepatic parenchyma only one animal presented this parameter altered. All the animals presented normal hepatic vessels and in regard to the biliary ducts, only two animals presented this parameter increased. Besides, the presence of the parasite can be evidenced in one animal during the accomplishment of the ultrasound scanning. In tomography, six cats were observed with enlargement of the liver and in regard to the other findings the results were descriptive. Among the obtained results, it can be concluded that the radiologic study just evaluate the liver size in a restricted way. The ultrasound scanning and computed tomography were considered good diagnostic tools, evaluating with clarity the hepatic size, the hepatic parenchyma, the configuration and width of biliary ducts, the gall bladder and the hepatic vessels.

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