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Lumbar Hernia
Siva P. Raman, MD; Amir A. Borhani, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Definitions

              • Lumbar hernia: Protrusion of abdominal contents through defect in lumbar region
              • Lumbar region: Area bounded by 12th rib superiorly, iliac crest inferiorly, erector spinae muscles medially, and free border of external oblique muscle laterally
              • Superior lumbar triangle of Grynfeltt-Lesshaft
                • Defined by 12th rib superiorly, superior border of internal oblique inferiorly, and erector spinae muscles medially
                • Transversus abdominis muscle lies deep in floor; latissimus dorsi muscle serves as roof of this space
              • Inferior lumbar triangle of Petit
                • Defined by latissimus dorsi muscle medially, iliac crest inferiorly, and free border of external oblique muscle laterally
                • Thoracolumbar fascia lies in floor of this triangle

            IMAGING

            • General Features

              • Imaging Recommendations

                DIFFERENTIAL DIAGNOSIS

                  PATHOLOGY

                  • General Features

                    CLINICAL ISSUES

                    • Presentation

                      • Demographics

                        • Natural History & Prognosis

                          • Treatment

                            DIAGNOSTIC CHECKLIST

                            • Consider

                              • Image Interpretation Pearls

                                Selected References

                                1. Mellnick VM et al: Traumatic lumbar hernias: do patient or hernia characteristics predict bowel or mesenteric injury? Emerg Radiol. 21(3):239-43, 2014
                                2. Saboo SS et al: Traumatic lumbar hernia: can't afford to miss. Emerg Radiol. 21(3):325-7, 2014
                                3. Aguirre DA et al: Abdominal wall hernias: imaging features, complications, and diagnostic pitfalls at multi-detector row CT. Radiographics. 25(6):1501-20, 2005
                                4. Baker ME et al: Lumbar hernia: diagnosis by CT. AJR Am J Roentgenol. 148(3):565-7, 1987
                                Related Anatomy
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                                Related Differential Diagnoses
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                                References
                                Tables

                                Tables

                                KEY FACTS

                                • Terminology

                                  • Imaging

                                    • Top Differential Diagnoses

                                      • Pathology

                                        • Clinical Issues

                                          TERMINOLOGY

                                          • Definitions

                                            • Lumbar hernia: Protrusion of abdominal contents through defect in lumbar region
                                            • Lumbar region: Area bounded by 12th rib superiorly, iliac crest inferiorly, erector spinae muscles medially, and free border of external oblique muscle laterally
                                            • Superior lumbar triangle of Grynfeltt-Lesshaft
                                              • Defined by 12th rib superiorly, superior border of internal oblique inferiorly, and erector spinae muscles medially
                                              • Transversus abdominis muscle lies deep in floor; latissimus dorsi muscle serves as roof of this space
                                            • Inferior lumbar triangle of Petit
                                              • Defined by latissimus dorsi muscle medially, iliac crest inferiorly, and free border of external oblique muscle laterally
                                              • Thoracolumbar fascia lies in floor of this triangle

                                          IMAGING

                                          • General Features

                                            • Imaging Recommendations

                                              DIFFERENTIAL DIAGNOSIS

                                                PATHOLOGY

                                                • General Features

                                                  CLINICAL ISSUES

                                                  • Presentation

                                                    • Demographics

                                                      • Natural History & Prognosis

                                                        • Treatment

                                                          DIAGNOSTIC CHECKLIST

                                                          • Consider

                                                            • Image Interpretation Pearls

                                                              Selected References

                                                              1. Mellnick VM et al: Traumatic lumbar hernias: do patient or hernia characteristics predict bowel or mesenteric injury? Emerg Radiol. 21(3):239-43, 2014
                                                              2. Saboo SS et al: Traumatic lumbar hernia: can't afford to miss. Emerg Radiol. 21(3):325-7, 2014
                                                              3. Aguirre DA et al: Abdominal wall hernias: imaging features, complications, and diagnostic pitfalls at multi-detector row CT. Radiographics. 25(6):1501-20, 2005
                                                              4. Baker ME et al: Lumbar hernia: diagnosis by CT. AJR Am J Roentgenol. 148(3):565-7, 1987