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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
- Interhemispheric cyst (IHC)
- Asymmetric ventriculomegaly with interhemispheric cyst and dysgenesis of corpus callosum (AVID)
Synonyms
- Ependymal cyst
- Neuroepithelial cyst
- Glioependymal cyst
Definitions
- Intracranial cyst centered near midline/interhemispheric fissure
- ± communication with ventricles
- Type 1 cysts communicate with ventricular system
- Type 2 cysts are intraparenchymal
- ± communication with ventricles
- Intracranial cyst centered near midline/interhemispheric fissure
IMAGING
General Features
Ultrasonographic Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Cagneaux M et al: Agenesis of the corpus callosum with interhemispheric cyst, associated with aberrant cortical sulci and without underlying cortical dysplasia. Ultrasound Obstet Gynecol. 42(5):603-5, 2013
- Paladini D et al: Agenesis of the fetal corpus callosum: sonographic signs change with advancing gestational age. Ultrasound Obstet Gynecol. 42(6):687-90, 2013
- Oh KY et al: Asymmetric ventriculomegaly, interhemispheric cyst, and dysgenesis of the corpus callosum (AVID): an imaging triad. J Ultrasound Med. 31(11):1811-20, 2012
- Winter TC et al: The cavum septi pellucidi: why is it important? J Ultrasound Med. 29(3):427-44, 2010
- Wong SK et al: Supratentorial abnormalities in the Chiari II malformationa, III: The interhemispheric cyst. J Ultrasound Med. 28(8):999-1006, 2009
- Moriyama E et al: Interhemispheric multiloculated ependymal cyst with dysgenesis of the corpus callosum: a case in a preterm fetus. Childs Nerv Syst. 23(7):807-13, 2007
- Mühler MR et al: Fetal MRI demonstrates glioependymal cyst in a case of sonographic unilateral ventriculomegaly. Pediatr Radiol. 37(4):391-5, 2007
- Obaldo RE et al: Congenital glioependymal cyst presenting with severe proptosis. AJNR Am J Neuroradiol. 28(6):999-1000, 2007
- Utsunomiya H et al: Midline cystic malformations of the brain: imaging diagnosis and classification based on embryologic analysis. Radiat Med. 24(6):471-81, 2006
- Pavone P et al: Callosal anomalies with interhemispheric cyst: expanding the phenotype. Acta Paediatr. 94(8):1066-72, 2005
- Barkovich AJ et al: Callosal agenesis with cyst: a better understanding and new classification. Neurology. 56(2):220-7, 2001
- Sundaram C et al: Cysts of the central nervous system: a clinicopathologic study of 145 cases. Neurol India. 49(3):237-42, 2001
- Tange Y et al: Interhemispheric glioependymal cyst associated with agenesis of the corpus callosum--case report. Neurol Med Chir (Tokyo). 40(10):536-42, 2000
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
- Interhemispheric cyst (IHC)
- Asymmetric ventriculomegaly with interhemispheric cyst and dysgenesis of corpus callosum (AVID)
Synonyms
- Ependymal cyst
- Neuroepithelial cyst
- Glioependymal cyst
Definitions
- Intracranial cyst centered near midline/interhemispheric fissure
- ± communication with ventricles
- Type 1 cysts communicate with ventricular system
- Type 2 cysts are intraparenchymal
- ± communication with ventricles
- Intracranial cyst centered near midline/interhemispheric fissure
IMAGING
General Features
Ultrasonographic Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Cagneaux M et al: Agenesis of the corpus callosum with interhemispheric cyst, associated with aberrant cortical sulci and without underlying cortical dysplasia. Ultrasound Obstet Gynecol. 42(5):603-5, 2013
- Paladini D et al: Agenesis of the fetal corpus callosum: sonographic signs change with advancing gestational age. Ultrasound Obstet Gynecol. 42(6):687-90, 2013
- Oh KY et al: Asymmetric ventriculomegaly, interhemispheric cyst, and dysgenesis of the corpus callosum (AVID): an imaging triad. J Ultrasound Med. 31(11):1811-20, 2012
- Winter TC et al: The cavum septi pellucidi: why is it important? J Ultrasound Med. 29(3):427-44, 2010
- Wong SK et al: Supratentorial abnormalities in the Chiari II malformationa, III: The interhemispheric cyst. J Ultrasound Med. 28(8):999-1006, 2009
- Moriyama E et al: Interhemispheric multiloculated ependymal cyst with dysgenesis of the corpus callosum: a case in a preterm fetus. Childs Nerv Syst. 23(7):807-13, 2007
- Mühler MR et al: Fetal MRI demonstrates glioependymal cyst in a case of sonographic unilateral ventriculomegaly. Pediatr Radiol. 37(4):391-5, 2007
- Obaldo RE et al: Congenital glioependymal cyst presenting with severe proptosis. AJNR Am J Neuroradiol. 28(6):999-1000, 2007
- Utsunomiya H et al: Midline cystic malformations of the brain: imaging diagnosis and classification based on embryologic analysis. Radiat Med. 24(6):471-81, 2006
- Pavone P et al: Callosal anomalies with interhemispheric cyst: expanding the phenotype. Acta Paediatr. 94(8):1066-72, 2005
- Barkovich AJ et al: Callosal agenesis with cyst: a better understanding and new classification. Neurology. 56(2):220-7, 2001
- Sundaram C et al: Cysts of the central nervous system: a clinicopathologic study of 145 cases. Neurol India. 49(3):237-42, 2001
- Tange Y et al: Interhemispheric glioependymal cyst associated with agenesis of the corpus callosum--case report. Neurol Med Chir (Tokyo). 40(10):536-42, 2000
