Pulmonary eosinophilia in France: possible toxocariasis

In France, except in the overseas departments and territories, pulmonary eosinophilia rarely has a parasitic cause except among subjects who have traveled to tropic areas. A 19-year-old man was hospitalized for incidentally discovered hypereosinophilia. The thoracic CT scan showed several hyperdense nodules that suggested bilateral interstitial alveolar lesions. Diagnosis was finally based on serologic results positive for toxocariasis. A 14-day course of albendazole led to regression of the eosinophilia and of the radiographic images. The frequency of toxocariasis or visceral larva migrans syndrome is probably underestimated. In adults, the symptoms can be atypical and possibly serious. Albendazole, for 14 days, is the reference treatment.