Abstract
We report a rare case of obturator hernia forming an intermuscular abscess in the right thigh. An 88-year-old woman reporting appetite loss and right extremity pain was found in palpation to have a hard mass in the medial side of the right thigh that was slightly tender. She had no symptom of ileus. Abdominal radiography showed an abnormal air accumulation around the right obturator foramen and computed tomography showed an abscess between the right pectoneal and obturator muscles. Judging that an abscess had formed due to perforation of the small intestine by an incarcerated obturator hernia, we found, on entering the peritoneal cavity, a Richter incarcerated obturator hernia and partially resected the ileum. The abscess under the pectoneal muscle was opened and drainaged at the right thigh. The femoral wound were left open because anaerobic bacterial infection was suspected. Cultures of pus were positive for Bacteroides fragilis, Klebsiela pneumoniae, and Enterococcus. The postoperative course proceeded uneventfully. Obturator hernia accompanied with femoral abscess is rare, but may lead to severe infectious disease that develops asymptomatically.
