Abstract
We report a case of small bowel perforation due to Metagonimiasis yokogawai infection. A 47-year-old man with diabetes and chronic renal failure who had vomiting and abdominal pain was found on abdominal CT to have an ileus caused by an intraperitoneal abscess. Emergency surgery was done. Intraoperative findings included an abdominal abscess in the ileocecal area and the pouch of Douglas caused by a small bowel perforation. Microscopic findings included many erosions and an eosinophilic gastroenteritis surrounding Metagonimiasis yokogawai. Therefore it is likely that the perforation was due to Metagonimiasis yokogawai. Patients with a Metagonimiasis yokogawai infection rarely have symptoms such as abdominal pain and diarrhea. There have been no previous reports of gastrointestinal perforation due to Metagorimiasis yokogawai in Japan.