Dandy Walker syndrome radiology

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Information about Dandy Walker syndrome radiology
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Published on July 14, 2016

Author: neelammalik33

Source: authorstream.com

CASE OF THE WEEK CT SCAN: CASE OF THE WEEK CT SCAN DR. MARYAM NASREEN PRESENTATION: PRESENTATION Nazar Muhammad 6 month old H/O - increaed head size ON Examination -increased head circumference -bulging of the posterior fontanelle Slide3: Computed tomography of the head was performed…. CT Findings: CT Findings Gross cystic dilatation of the 4 th ventricle with dilatation of the 3 rd and the lateral ventricles Hypoplastic cerebellar hemispheres Undetectable vermis Thinning and bulging of the occipital bone with expansion of posterior fossa. DIAGNOSIS: DIAGNOSIS Dandy-Walker Syndrome DANDY-WALKER SYNDROME: DANDY-WALKER SYNDROME In the condition there is more or less complete memberanous obstruction to foramina of megandie and lushka . FEATURES: FEATURES Cystic dilatation of the 4 th ventricle Cerebellum is hypoplastic Vermis is undetectable Thinning and bulging of the occipital bone, expanding posterior fossa. Marked hydrocephalous with dilatation of all ventricles. Association with other congenital anomalies such as meningocele/defects of corpus callosum. DIFFERENTIAL DIAGNOSIS: DIFFERENTIAL DIAGNOSIS Arachnoid cyst Giant cisterna magna Gliomatous cyst : D/D from these is easy because of the presence of normal or small 4 th ventricle in these conditions and dysplastic cerebellum in dandy walker THANK YOU!: THANK YOU!

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