[Pleural effusion and Toxocara canis].

Toxocariasis is an infrequent disease which particularly affects children. Toxocara canis is an uncommon parasite of man, who is not the normal host for the nematode. Without doubt Toxocara will be recognised more and more thanks to specific serological tests, in particular the ELISA-ESA test. The authors observed the association of a pleural reaction and a generalised hypereosinophilia (blood, pleural fluid and broncho-alveolar lavage). They noted a complete regression on Mebendazole.