Aim: Describe a rare case of Richter's hernia with caecum incarceration into a right femoral hernia and provide a narrative literature review about its surgical management.
Material And Methods: A 46-year-old woman presented to the Emergency Department and to our surgical unit with a two-days history of worsening abdominal pain in the right lower quadrant without nausea or vomiting, associated with an irreducible lump. Computed tomography of the abdomen described a right inguinal hernia containing small bowel with perivisceral fluid in it without signs of small bowel occlusion nor perforation.
Results: A Richter 's femoral hernia with necrotic caecum wall was found but the appendix was not involved. Through a mini-laparotomy, tangential caecal resection and appendectomy were performed. The femoral defect was repaired with a polypropylene mesh-plug placed in the pre-peritoneal space. Postoperative period was uneventful and the patient was discharged on the fifth post-operative day.
Discussion: Femoral hernias account for only 2-4% of all groin hernias and occur through a small fascial defect in the femoral canal. Due to its narrowness, it leads to a high risk of incarceration and strangulation thus explaining the increased mortality in the emergency setting (up to 10 fold compared with the elective repair). In some cases, symptoms are no specific and uncommon findings have been reported. Surgical exploration is mandatory in the presence of signs of bowel strangulation or perforation and different approaches (either open or laparoscopically) have been described in literature.
Conclusions: Caecum wall necrosis secondary to an incarcerated Richter's femoral hernia is a rare but dangerous event. Surgical approach is selected on surgeon's expertise. The use of prosthetic mesh is always recommended.
Key Words: Bowel necrosis, Emergency surgery, Hernia repair, Richter's hernia.
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