Abstract
A 70-year-old male visited our hospital because of abdominal pain and a high fever. Since abdominal CT examination revealed an intra-peritoneal abscess, antibiotics were administered. The abscess decreased, his symptoms improved, and he was discharged from the hospital. However, two months later, his symptoms had returned and the abscess was larger, As a result, he underwent surgery Numerous white nodules were found in the peritoneum with tight adhesion between the omentum and the peritoneum. We resected a granuloma in the omentum and the mesenterium. The pathological diagnosis was a granulomatous inflammation with a great number of parasitic eggs of Paragonimus westermanii. By listening again to his detailed past history, we learned that he had eaten raw boar meat which is known to be an intermediate host of Paragonimus westermanii. Praziquantel, one of the antihelmintic drugs effective against flatworms, was orally administered. In cases with abdominal abscess of unknown cause, ectopic paragonimiasis should be considered in the differential diagnoses.
