Abstract
In 1988, a 39 year-old-man was admitted to our hospital with RLQ pain. The next day, he had increasing lower abdominal pain, and small intestine resection was performed. Anisakis was found in the ileum. Anisakiasis infection can be caused by eating raw fish, such as sushi or sashimi. Pathological features of the disease are phlegmonous enteritis, such as edematous thicking of the wall with massive eosinophilic or other cellular element infiltration in all layers. It is difficult to diagnose intestinal anisakiasis compared to gastric anisakiasis, and other differentiated diagnoses of the disease include acute appendicitis, ileus, diverticulitis, and intussusception. Some cases have good prognosis with conservative treatment, but many patients reauire surgical treatment.