Developmental arrest of the cerebellum.
D000015:Abnormalities, Multiple; D001933:Brain Stem / Q000473:pathology; D002531:Cerebellum / Q000002:abnormalities* / Q000196:embryology / Q000473:pathology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008636:Mesencephalon / Q000473:pathology; D013116:Spinal Cord / Q000473:pathology