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Obturator hernia is a rare type of hernia which accounts for only 0.07-1.4% of all intra-abdominal hernias and 0.2-5.8% of small-intestinal obstructions. Because the symptoms are non-specific, the diagnosis is often delayed until laparotomy is performed to treat bowel obstruction. The need for awareness of the condition is stressed, and the diagnosis of obturator hernia should be strongly suspected in a thin, elderly woman who has small-bowel obstruction and no previous abdominal surgery. Here is a case report of obturator hernia in which the diagnosis was difficult because of the slow development of symptoms; on laparotomy it was found to be a Richter hernia. CT scanning can be helpful and will typically show an incarcerated small bowel behind the pectineus muscle. Laparoscopy may be necessary for diagnosis, and the hernia can be repaired laparoscopically.

Obturator hernia is a rare type of hernia which accounts for only 0.07-1.4% of all intra-abdominal hernias and 0.2-5.8% of small-intestinal obstructions. Because the symptoms are non-specific, the diagnosis is often delayed until laparotomy is performed to treat bowel obstruction. The need for awareness of the condition is stressed, and the diagnosis of obturator hernia should be strongly suspected in a thin, elderly woman who has small-bowel obstruction and no previous abdominal surgery. Here is a case report of obturator hernia in which the diagnosis was difficult because of the slow development of symptoms; on laparotomy it was found to be a Richter hernia. CT scanning can be helpful and will typically show an incarcerated small bowel behind the pectineus muscle. Laparoscopy may be necessary for diagnosis, and the hernia can be repaired laparoscopically.