Introduction to Infratentorial Defects

Mild Chiari I Malformation

Moderate Chiari I with Syringohydromyelia

Severe Chiari Malformation with Post Op

Asymptomatic Chiari I

Borderline Cerebellar Tonsillar Ectopia Vs. Chiari I Malformation

Mild Chiari Natural History

Chiari II Malformation

Chiari II with Interdigitation of gyri

Chiari II Malformation, Fetal Imaging

Rhombencephalosynapsis

Rhombencephalosynapsis, Fetal Imaging

Rhombencephalosynapsis, Aqueductal stenosis, Postnatal

Joubert Syndrome

Osteolipoma

Dandy-walker malformation

Moderate Severity Dandy-walker Spectrum

Mild Severity Dandy-walker spectrum

Dandy-walker with Agenesis of the Corpus Callosum

Retrovermian Arachnoid Cyst

Infravermian Arachnoid Cyst

Retrovermian/Infravermian Arachnoid Cyst

Infratentorial/Posterior Fossa Defects Conclusion