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Cavum Veli Interpositi
Usha D. Nagaraj, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Cavum veli interpositi (CVI)
            • Synonyms

              • Cavum velum interpositum
            • Definitions

              • Potential space between sheets of tela choroidea of 3rd ventricular roof that is anterior extension of quadrigeminal cistern below forniceal body
              • Normal anatomic variation, though can develop CVI cysts, which are usually incidental
                • Can require neurosurgical intervention if there is associated ventricular obstruction

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Ultrasonographic Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Gross Pathologic & Surgical Features

                            • Microscopic Features

                              CLINICAL ISSUES

                              • Presentation

                                • Demographics

                                  • Treatment

                                    DIAGNOSTIC CHECKLIST

                                    • Consider

                                      Selected References

                                      1. Nagaraj UD et al: Abnormalities associated with the cavum septi pellucidi on fetal MRI: what radiologists need to know. AJR Am J Roentgenol. 210(5):989-97, 2018
                                      2. Gómez EC et al: Prenatal diagnosis of a progressively enlarging cavum veli interpositi cyst. J Ultrasound Med. 33(10):1868-71, 2014
                                      3. Tong CK et al: Endoscopic fenestration of cavum velum interpositum cysts: a case study of two symptomatic patients. Childs Nerv Syst. 28(8):1261-4, 2012
                                      4. Tubbs RS et al: Cavum velum interpositum, cavum septum pellucidum, and cavum vergae: a review. Childs Nerv Syst. 27(11):1927-30, 2011
                                      5. D'Addario V et al: Cavum veli interpositi cyst: prenatal diagnosis and postnatal outcome. Ultrasound Obstet Gynecol. 34(1):52-4, 2009
                                      6. Tubbs RS et al: The velum interpositum revisited and redefined. Surg Radiol Anat. 30(2):131-5, 2008
                                      7. Epelman M et al: Differential diagnosis of intracranial cystic lesions at head US: correlation with CT and MR imaging. Radiographics. 26(1):173-96, 2006
                                      8. Osborn AG et al: Intracranial cysts: radiologic-pathologic correlation and imaging approach. Radiology. 239(3):650-64, 2006
                                      9. Eisenberg VH et al: Prenatal diagnosis of cavum velum interpositum cysts: significance and outcome. Prenat Diagn. 23(10):779-83, 2003
                                      10. Vergani P et al: Ultrasonographic differential diagnosis of fetal intracranial interhemispheric cysts. Am J Obstet Gynecol. 180(2 Pt 1):423-8, 1999
                                      11. Chen CY et al: Sonographic characteristics of the cavum velum interpositum. AJNR Am J Neuroradiol. 19(9):1631-5, 1998
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Top Differential Diagnoses

                                            • Clinical Issues

                                              • Diagnostic Checklist

                                                TERMINOLOGY

                                                • Abbreviations

                                                  • Cavum veli interpositi (CVI)
                                                • Synonyms

                                                  • Cavum velum interpositum
                                                • Definitions

                                                  • Potential space between sheets of tela choroidea of 3rd ventricular roof that is anterior extension of quadrigeminal cistern below forniceal body
                                                  • Normal anatomic variation, though can develop CVI cysts, which are usually incidental
                                                    • Can require neurosurgical intervention if there is associated ventricular obstruction

                                                IMAGING

                                                • General Features

                                                  • CT Findings

                                                    • MR Findings

                                                      • Ultrasonographic Findings

                                                        • Imaging Recommendations

                                                          DIFFERENTIAL DIAGNOSIS

                                                            PATHOLOGY

                                                            • General Features

                                                              • Gross Pathologic & Surgical Features

                                                                • Microscopic Features

                                                                  CLINICAL ISSUES

                                                                  • Presentation

                                                                    • Demographics

                                                                      • Treatment

                                                                        DIAGNOSTIC CHECKLIST

                                                                        • Consider

                                                                          Selected References

                                                                          1. Nagaraj UD et al: Abnormalities associated with the cavum septi pellucidi on fetal MRI: what radiologists need to know. AJR Am J Roentgenol. 210(5):989-97, 2018
                                                                          2. Gómez EC et al: Prenatal diagnosis of a progressively enlarging cavum veli interpositi cyst. J Ultrasound Med. 33(10):1868-71, 2014
                                                                          3. Tong CK et al: Endoscopic fenestration of cavum velum interpositum cysts: a case study of two symptomatic patients. Childs Nerv Syst. 28(8):1261-4, 2012
                                                                          4. Tubbs RS et al: Cavum velum interpositum, cavum septum pellucidum, and cavum vergae: a review. Childs Nerv Syst. 27(11):1927-30, 2011
                                                                          5. D'Addario V et al: Cavum veli interpositi cyst: prenatal diagnosis and postnatal outcome. Ultrasound Obstet Gynecol. 34(1):52-4, 2009
                                                                          6. Tubbs RS et al: The velum interpositum revisited and redefined. Surg Radiol Anat. 30(2):131-5, 2008
                                                                          7. Epelman M et al: Differential diagnosis of intracranial cystic lesions at head US: correlation with CT and MR imaging. Radiographics. 26(1):173-96, 2006
                                                                          8. Osborn AG et al: Intracranial cysts: radiologic-pathologic correlation and imaging approach. Radiology. 239(3):650-64, 2006
                                                                          9. Eisenberg VH et al: Prenatal diagnosis of cavum velum interpositum cysts: significance and outcome. Prenat Diagn. 23(10):779-83, 2003
                                                                          10. Vergani P et al: Ultrasonographic differential diagnosis of fetal intracranial interhemispheric cysts. Am J Obstet Gynecol. 180(2 Pt 1):423-8, 1999
                                                                          11. Chen CY et al: Sonographic characteristics of the cavum velum interpositum. AJNR Am J Neuroradiol. 19(9):1631-5, 1998