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

Chiari III Malformation

Rhombencephalosynapsis

Rhombencephalosynapsis, Fetal Imaging

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