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Epidermoid Cyst
Anne G. Osborn, MD, FACR; Gregory L. Katzman, MD, MBA
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Synonyms

                • Ectodermal inclusion cyst
              • Definitions

                • Intracranial epidermoids: Congenital inclusion cysts

              IMAGING

              • General Features

                • Radiographic Findings

                  • CT Findings

                    • MR Findings

                      • Angiographic Findings

                        • Nonvascular Interventions

                          • Imaging Recommendations

                            DIFFERENTIAL DIAGNOSIS

                              PATHOLOGY

                              • General Features

                                • Gross Pathologic & Surgical Features

                                  • Microscopic Features

                                    CLINICAL ISSUES

                                    • Presentation

                                      • Demographics

                                        • Natural History & Prognosis

                                          • Treatment

                                            DIAGNOSTIC CHECKLIST

                                            • Consider

                                              • Image Interpretation Pearls

                                                Selected References

                                                1. Aboud E et al: Giant intracranial epidermoids: is total removal feasible? J Neurosurg. 1-14, 2015
                                                2. Law EK et al: Atypical intracranial epidermoid cysts: rare anomalies with unique radiological features. Case Rep Radiol. 2015:528632, 2015
                                                3. Demir MK et al: Rare and challenging extra-axial brain lesions: CT and MRI findings with clinico-radiological differential diagnosis and pathological correlation. Diagn Interv Radiol. 20(5):448-52, 2014
                                                4. Vellutini EA et al: Malignant transformation of intracranial epidermoid cyst. Br J Neurosurg. 28(4):507-9, 2014
                                                5. Velamati R et al: Meningitis secondary to ruptured epidermoid cyst: case-based review. Pediatr Ann. 42(6):248-51, 2013
                                                6. Ren X et al: Clinical, radiological, and pathological features of 24 atypical intracranial epidermoid cysts. J Neurosurg. 116(3):611-21, 2012
                                                7. Li F et al: Hyperdense intracranial epidermoid cysts: a study of 15 cases. Acta Neurochir (Wien). 149(1):31-9; discussion 39, 2007
                                                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

                                                            • Synonyms

                                                              • Ectodermal inclusion cyst
                                                            • Definitions

                                                              • Intracranial epidermoids: Congenital inclusion cysts

                                                            IMAGING

                                                            • General Features

                                                              • Radiographic Findings

                                                                • CT Findings

                                                                  • MR Findings

                                                                    • Angiographic Findings

                                                                      • Nonvascular Interventions

                                                                        • Imaging Recommendations

                                                                          DIFFERENTIAL DIAGNOSIS

                                                                            PATHOLOGY

                                                                            • General Features

                                                                              • Gross Pathologic & Surgical Features

                                                                                • Microscopic Features

                                                                                  CLINICAL ISSUES

                                                                                  • Presentation

                                                                                    • Demographics

                                                                                      • Natural History & Prognosis

                                                                                        • Treatment

                                                                                          DIAGNOSTIC CHECKLIST

                                                                                          • Consider

                                                                                            • Image Interpretation Pearls

                                                                                              Selected References

                                                                                              1. Aboud E et al: Giant intracranial epidermoids: is total removal feasible? J Neurosurg. 1-14, 2015
                                                                                              2. Law EK et al: Atypical intracranial epidermoid cysts: rare anomalies with unique radiological features. Case Rep Radiol. 2015:528632, 2015
                                                                                              3. Demir MK et al: Rare and challenging extra-axial brain lesions: CT and MRI findings with clinico-radiological differential diagnosis and pathological correlation. Diagn Interv Radiol. 20(5):448-52, 2014
                                                                                              4. Vellutini EA et al: Malignant transformation of intracranial epidermoid cyst. Br J Neurosurg. 28(4):507-9, 2014
                                                                                              5. Velamati R et al: Meningitis secondary to ruptured epidermoid cyst: case-based review. Pediatr Ann. 42(6):248-51, 2013
                                                                                              6. Ren X et al: Clinical, radiological, and pathological features of 24 atypical intracranial epidermoid cysts. J Neurosurg. 116(3):611-21, 2012
                                                                                              7. Li F et al: Hyperdense intracranial epidermoid cysts: a study of 15 cases. Acta Neurochir (Wien). 149(1):31-9; discussion 39, 2007