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Pediatría (Asunción)

versão On-line ISSN 1683-9803


CHAMORRO NOCEDA, Luis Alberto. Visceral larva migrans as a cause of prolonged febrile syndrome and severe eosinophilia. A case report. Pediatr. (Asunción) [online]. 2021, vol.48, n.2, pp.147-154. ISSN 1683-9803.

Toxocara canis and catis are helminths that parasitize the intestine of dogs or cats, their definitive hosts. Females shed infective eggs into the environment, which, when accidentally ingested by humans, only develop the embryonic larval stage and cause toxocariasis. This is a zoonosis that is widespread throughout the world, especially in those areas where poor habitat and hygienic conditions prevail. The clinical picture can vary from asymptomatic forms to visceral larva migrans (VLM) or ocular larva migrans (OLM), due to the dissemination of embryonic larvae in the liver, lungs and to a lesser extent the CNS. VLM is clinically characterized by the presence ofhepatomegaly, pulmonary infiltration with cough, eosinophilia of varying intensity, hyper Ig E and Ig G anti-toxocara antibodies. Since fever is not a prominent clinical symptom, the following clinical case is presented.

Palavras-chave : toxocariasis; visceral larvae migrans. Prolonged febrile syndrome.

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