MR imaging of Chiari II malformation associated with dysgenesis of cerebellum and brain stem.
Extensive cerebellar hypogenesis is rare in Chiari II malformation and, to our knowledge, has not been described in modern radiological literature. In our case near total absence of cerebellar tissue and "underdevelopment" of the brain stem were noted in a patient with several characteristic features of Chiari II malformation.
D000015:Abnormalities, Multiple / Q000175:diagnosis*; D001139:Arnold-Chiari Malformation / Q000175:diagnosis*; D001933:Brain Stem / Q000002:abnormalities*; D002531:Cerebellum / Q000002:abnormalities*; D002648:Child; D005260:Female; D006801:Humans; D009682:Magnetic Resonance Spectroscopy