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TMJ Aneurysmal Bone Cyst
David Hatcher, DDS, MSc
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Abbreviations

                • Aneurysmal bone cyst (ABC)
              • Synonyms

                • Benign central giant cell tumor, central giant cell lesion
              • Definitions

                • Reactive lesion of bone that contains many large blood-filled spaces separated by connective tissue septa and containing giant cells
                • Devoid of epithelial lining; therefore, not true cyst
                • Hydraulic-appearing outer margins ("ballooning" of cortex) gave rise to term "aneurysmal"

              IMAGING

              • General Features

                • CT Findings

                  • MR Findings

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Gross Pathologic & Surgical Features

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Image Interpretation Pearls

                                    Selected References

                                    1. Ettl T et al: Recurrent aneurysmal bone cyst of the mandibular condyle with soft tissue extension. Int J Oral Maxillofac Surg. 38(6):699-703, 2009
                                    2. Park W et al: Intraosseous lesion in mandibular condyle mimicking temporomandibular disorders: report of 3 cases. J Orofac Pain. 22(1):65-70, 2008
                                    3. Smolka W et al: Aneurysmal bone cyst of the tuberculum articulare of the temporomandibular joint: a case report. Quintessence Int. 39(8):679-83, 2008
                                    4. Warner BF et al: Temporomandibular joint neoplasms and pseudotumors. Adv Anat Pathol. 7(6):365-81, 2000
                                    5. Svensson B et al: Benign osteoblastoma associated with an aneurysmal bone cyst of the mandibular ramus and condyle. Oral Surg Oral Med Oral Pathol. 76(4):433-6, 1993
                                    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

                                              • Diagnostic Checklist

                                                TERMINOLOGY

                                                • Abbreviations

                                                  • Aneurysmal bone cyst (ABC)
                                                • Synonyms

                                                  • Benign central giant cell tumor, central giant cell lesion
                                                • Definitions

                                                  • Reactive lesion of bone that contains many large blood-filled spaces separated by connective tissue septa and containing giant cells
                                                  • Devoid of epithelial lining; therefore, not true cyst
                                                  • Hydraulic-appearing outer margins ("ballooning" of cortex) gave rise to term "aneurysmal"

                                                IMAGING

                                                • General Features

                                                  • CT Findings

                                                    • MR Findings

                                                      DIFFERENTIAL DIAGNOSIS

                                                        PATHOLOGY

                                                        • General Features

                                                          • Gross Pathologic & Surgical Features

                                                            CLINICAL ISSUES

                                                            • Presentation

                                                              • Demographics

                                                                • Natural History & Prognosis

                                                                  • Treatment

                                                                    DIAGNOSTIC CHECKLIST

                                                                    • Image Interpretation Pearls

                                                                      Selected References

                                                                      1. Ettl T et al: Recurrent aneurysmal bone cyst of the mandibular condyle with soft tissue extension. Int J Oral Maxillofac Surg. 38(6):699-703, 2009
                                                                      2. Park W et al: Intraosseous lesion in mandibular condyle mimicking temporomandibular disorders: report of 3 cases. J Orofac Pain. 22(1):65-70, 2008
                                                                      3. Smolka W et al: Aneurysmal bone cyst of the tuberculum articulare of the temporomandibular joint: a case report. Quintessence Int. 39(8):679-83, 2008
                                                                      4. Warner BF et al: Temporomandibular joint neoplasms and pseudotumors. Adv Anat Pathol. 7(6):365-81, 2000
                                                                      5. Svensson B et al: Benign osteoblastoma associated with an aneurysmal bone cyst of the mandibular ramus and condyle. Oral Surg Oral Med Oral Pathol. 76(4):433-6, 1993