Respiratory symptoms and subcutaneous granuloma caused by mesocercariae: a case report.

A 38-year-old man with no history of pulmonary disease developed intermittent hives and bronchospasms shortly after returning from a hunting trip. Approximately one year later, examination of an excised subcutaneous nodule demonstrated infection with a mesocercaria (larval trematode). The morphology of the parasite was consistent with infection with a parasite of the Alaria spp. or Strigea spp. Eating undercooked wild goose meat during the hunting trip was the most likely source of infection. This appears to be the first report of human infection with mesocercariae acquired through the ingestion of wild goose meat.