Diagnóstico ultrassonográfico de parasita em bolsa escrotal de um cão – relato de caso

Abstract

Dioctophyma renale, first observed by Goeze in 1782, is one of the largest known parasites. The dioctofimose can affect several species of animals, including man, characterizing a public health problem. The right kidney is the preferred location of this parasite, however, cases have been reported elsewhere. A four years old canine, Dogo Argentino breed, was presented with a swelling in the right scrotum. In the ultrasound examination tubular hyperechoic structures were observed close to the head of the right epididymis suggesting the presence of a parasite (roundworm). The patient was referred for surgical procedure where the removal of the parasite was carried out. The parasitological report confirmed the sample as positive to Dioctophyma renale. In addition, histopathological examination revealed the presence of the parasite eggs in the right scrotum of the patient. Although rare, the presence of the parasite in the scrotum must be considered as a differential diagnosis for the increased volume in this region. The ultrasound examination proved to be efficient to identify the location of the parasitism, through the parasite characterization.