The eosinophilic granuloma of the gastrointestinal tract was in recent years observed more frequently in infections with larvae of the herring-roundworm Anisakis. The associated symptoms are similar to those of acute appendicitis. Proof of a worm within the granuloma is usually easy, where as the classification to individual species is difficult, since the larva mostly occurs as a largely decomposed corpus. Due to the long period between infection and detection of the eosinophilic granuloma patients often do not remember the origin of infection.
Adult Animals