Male, 78 years old, with dementia. Assess for the presence of brain volume loss consistent with Alzheimer's. No restricted diffusion is seen. Extensive patchy periventricular and subcortical T2 hyperintensity is seen, a nonspecific finding. No evidence of edema or mass effect is detected. The left cerebellar hemisphere is hypoplastic/dysplastic with associated underdevelopment of the bony left posterior fossa. No intracranial hemorrhage or any abnormal extra-axial fluid collection is suspected. The ventricular system is normal in size and morphology, with the exception of the fourth ventricle which is somewhat malformed due to the abnormality discussed above. No significant or specific pattern of parenchymal volume loss is detected on this study. Cervical orthopedic fusion hardware is partially seen.
1. No significant or specific pattern of parenchymal volume loss is detected on this study. 2. Patchy bilateral white matter lesions are nonspecific but may represent advanced chronic microvascular ischemic disease.3. Congenital hypoplasia/dysplasia of the left cerebellum.