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Petrous Apex Asymmetric Marrow
H. Ric Harnsberger, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Abbreviations

              • Petrous apex (PA)
            • Synonyms

              • PA pseudolesion
            • Definitions

              • PA asymmetric marrow: Asymmetric pneumatization of PA with nonpneumatized marrow space in opposite PA simulating mass lesion

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        CLINICAL ISSUES

                        • Presentation

                          • Demographics

                            • Natural History & Prognosis

                              • Treatment

                                DIAGNOSTIC CHECKLIST

                                • Consider

                                  Selected References

                                  1. Bag AK et al: Neuroimaging: intrinsic lesions of the central skull base region. Semin Ultrasound CT MR. 34(5):412-35, 2013
                                  2. Wu H et al: Coexistence of a pseudolesion and a true lesion in the same location: a rare misleading imaging finding. Am J Otolaryngol. 33(2):266-7, 2012
                                  3. Schmalfuss IM: Petrous apex. Neuroimaging Clin N Am. 19(3):367-91, 2009
                                  4. Connor SE et al: Imaging of the petrous apex: a pictorial review. Br J Radiol. 81(965):427-35, 2008
                                  5. Leonetti JP et al: Incidental petrous apex findings on magnetic resonance imaging. Ear Nose Throat J. 80(4):200-2, 205-6, 2001
                                  6. Moore KR et al: 'Leave me alone' lesions of the petrous apex. AJNR Am J Neuroradiol. 19(4):733-8, 1998
                                  7. Virapongse C et al: Computed tomography of temporal bone pneumatization: 1. Normal pattern and morphology. AJR Am J Roentgenol. 145(3):473-81, 1985
                                  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

                                            • Abbreviations

                                              • Petrous apex (PA)
                                            • Synonyms

                                              • PA pseudolesion
                                            • Definitions

                                              • PA asymmetric marrow: Asymmetric pneumatization of PA with nonpneumatized marrow space in opposite PA simulating mass lesion

                                            IMAGING

                                            • General Features

                                              • CT Findings

                                                • MR Findings

                                                  • Imaging Recommendations

                                                    DIFFERENTIAL DIAGNOSIS

                                                      PATHOLOGY

                                                      • General Features

                                                        CLINICAL ISSUES

                                                        • Presentation

                                                          • Demographics

                                                            • Natural History & Prognosis

                                                              • Treatment

                                                                DIAGNOSTIC CHECKLIST

                                                                • Consider

                                                                  Selected References

                                                                  1. Bag AK et al: Neuroimaging: intrinsic lesions of the central skull base region. Semin Ultrasound CT MR. 34(5):412-35, 2013
                                                                  2. Wu H et al: Coexistence of a pseudolesion and a true lesion in the same location: a rare misleading imaging finding. Am J Otolaryngol. 33(2):266-7, 2012
                                                                  3. Schmalfuss IM: Petrous apex. Neuroimaging Clin N Am. 19(3):367-91, 2009
                                                                  4. Connor SE et al: Imaging of the petrous apex: a pictorial review. Br J Radiol. 81(965):427-35, 2008
                                                                  5. Leonetti JP et al: Incidental petrous apex findings on magnetic resonance imaging. Ear Nose Throat J. 80(4):200-2, 205-6, 2001
                                                                  6. Moore KR et al: 'Leave me alone' lesions of the petrous apex. AJNR Am J Neuroradiol. 19(4):733-8, 1998
                                                                  7. Virapongse C et al: Computed tomography of temporal bone pneumatization: 1. Normal pattern and morphology. AJR Am J Roentgenol. 145(3):473-81, 1985