[Two cases of visceral larva migrans due to Ascaris suum showing a migratory nodular shadow]

The number of cases of visceral larva migrans caused by the pig ascarid, Ascaris suum has recently been increasing. We have encountered two cases of visceral larva migrans due to A. suum with a nodular shadow on the chest radiograph and eosinophilia in the peripheral blood. Patient 1 was a 26-year-old man who had been admitted to our hospital for an elective minor operation. His chest radiology and chest computed tomography revealed a nodule in the left lung field. Peripheral blood eosinophil counts and serum IgE values were elevated. Radiological abnormality disappeared without treatment. Patient 2 was a 57-year-old man who had been admitted to our hospital because of a migratory nodule on chest radiography and eosinophilia in the peripheral blood. The diagnosis of visceral larva migrans caused by A. suum was made because the serum of both patients was positive for an antibody against A. suum. Patient 1 and patient 2 were accustomed to eating the raw flesh of wild boar and deer, and of chicken and turkey, respectively. Treatment with albentazole was effective in these patients.