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Dandy Walker (DW) malformation is a cerebelar malformation associated with multiple cognitive deficits, psychopathological alterations and motor disturbances. We present the case of a patient affected by this malformation who was referred to the child mental health unit. We conducted a review on the anatomy, epidemiology, clinical presentation, prognosis and comorbidity of this malformation as well as on the psychopathology associated with cerebelar pathology as a whole, including Shamahmann and Sherman's cognitive-affective cerebellar syndrome. Finally, we present the case description and establish the differential diagnosis from the patient's history, the mental state examination and complementary examinations (neuroimaging and neuropsychological tests). [ABSTRACT FROM AUTHOR]