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Brain
Diagnosis
Pathology-Based Diagnoses
Primary Nonneoplastic Cysts
Nonneoplastic Tumor-Associated Cysts
Nonneoplastic Tumor-Associated Cysts
Anne G. Osborn, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          TERMINOLOGY

          • Abbreviations

            • Nonneoplastic tumor-associated cysts (TACs)

          • Synonyms

            • Peritumoral cyst
            • "Herald" cyst (at surgery, may "herald" immediately adjacent mass)
            • Tumor-associated arachnoid cyst (AC)
            • Tumor-associated enlarged perivascular spaces (PVSs)

          • Definitions

            • Benign fluid-containing cyst adjacent to, but not within, neoplasm

          IMAGING

          • General Features

            • Imaging Recommendations

              • CT Findings

                • MR Findings

                  DIFFERENTIAL DIAGNOSIS

                    PATHOLOGY

                    • General Features

                      • Gross Pathologic & Surgical Features

                        • Microscopic Features

                          CLINICAL ISSUES

                          • Presentation

                            DIAGNOSTIC CHECKLIST

                            • Consider

                              Selected References

                              1. Fujimori T et al: A rare case of postoperative symptomatic cyst formation after resection of a large convexity meningioma. World Neurosurg. 127:160-4, 2019
                              2. Boukobza M et al: Cystic meningioma: radiological, histological, and surgical particularities in 43 patients. Acta Neurochir (Wien). 158(10):1955-64, 2016
                              3. Drake-Pérez M et al: Extraparenchymal lesions in adults. Neuroimaging Clin N Am. 26(4):621-46, 2016
                              4. Herde RF et al: Peritumoral cysts associated with pituitary macroadenoma. J Neurosurg. 123(3):789-93, 2015
                              5. Toda H et al: Bilateral frontal cysts from a crista galli meningioma. Neurology. 85(23):2081-2, 2015
                              6. Güzel A et al: Pituitary adenoma coexisting with a suprasellar arachnoid cyst. Turk Neurosurg. 17(2):138-41, 2007
                              7. Jung S et al: Increased expression of intracystic matrix metalloproteinases in brain tumors: relationship to the pathogenesis of brain tumor-associated cysts and peritumoral edema. J Clin Neurosci. 14(12):1192-8, 2007
                              8. Arai M et al: Enhancing gliotic cyst wall with microvascular proliferation adjacent to a meningioma. J Clin Neurosci. 13(1):136-9, 2006
                              9. Osborn AG et al: Intracranial cysts: radiologic-pathologic correlation and imaging approach. Radiology. 239(3):650-64, 2006
                              10. Lonser RR et al: Edema is a precursor to central nervous system peritumoral cyst formation. Ann Neurol. 58(3):392-9, 2005
                              11. Lohle PN et al: Cystic lesions accompanying extra-axial tumours. Neuroradiology. 41(1):13-7, 1999
                              Related Anatomy
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                              Related Differential Diagnoses
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                              References
                              Tables

                              Tables

                              KEY FACTS

                              • Terminology

                                • Imaging

                                  • Top Differential Diagnoses

                                    • Pathology

                                      TERMINOLOGY

                                      • Abbreviations

                                        • Nonneoplastic tumor-associated cysts (TACs)

                                      • Synonyms

                                        • Peritumoral cyst
                                        • "Herald" cyst (at surgery, may "herald" immediately adjacent mass)
                                        • Tumor-associated arachnoid cyst (AC)
                                        • Tumor-associated enlarged perivascular spaces (PVSs)

                                      • Definitions

                                        • Benign fluid-containing cyst adjacent to, but not within, neoplasm

                                      IMAGING

                                      • General Features

                                        • Imaging Recommendations

                                          • CT Findings

                                            • MR Findings

                                              DIFFERENTIAL DIAGNOSIS

                                                PATHOLOGY

                                                • General Features

                                                  • Gross Pathologic & Surgical Features

                                                    • Microscopic Features

                                                      CLINICAL ISSUES

                                                      • Presentation

                                                        DIAGNOSTIC CHECKLIST

                                                        • Consider

                                                          Selected References

                                                          1. Fujimori T et al: A rare case of postoperative symptomatic cyst formation after resection of a large convexity meningioma. World Neurosurg. 127:160-4, 2019
                                                          2. Boukobza M et al: Cystic meningioma: radiological, histological, and surgical particularities in 43 patients. Acta Neurochir (Wien). 158(10):1955-64, 2016
                                                          3. Drake-Pérez M et al: Extraparenchymal lesions in adults. Neuroimaging Clin N Am. 26(4):621-46, 2016
                                                          4. Herde RF et al: Peritumoral cysts associated with pituitary macroadenoma. J Neurosurg. 123(3):789-93, 2015
                                                          5. Toda H et al: Bilateral frontal cysts from a crista galli meningioma. Neurology. 85(23):2081-2, 2015
                                                          6. Güzel A et al: Pituitary adenoma coexisting with a suprasellar arachnoid cyst. Turk Neurosurg. 17(2):138-41, 2007
                                                          7. Jung S et al: Increased expression of intracystic matrix metalloproteinases in brain tumors: relationship to the pathogenesis of brain tumor-associated cysts and peritumoral edema. J Clin Neurosci. 14(12):1192-8, 2007
                                                          8. Arai M et al: Enhancing gliotic cyst wall with microvascular proliferation adjacent to a meningioma. J Clin Neurosci. 13(1):136-9, 2006
                                                          9. Osborn AG et al: Intracranial cysts: radiologic-pathologic correlation and imaging approach. Radiology. 239(3):650-64, 2006
                                                          10. Lonser RR et al: Edema is a precursor to central nervous system peritumoral cyst formation. Ann Neurol. 58(3):392-9, 2005
                                                          11. Lohle PN et al: Cystic lesions accompanying extra-axial tumours. Neuroradiology. 41(1):13-7, 1999