Demyelinating Disease
10.1055/b-0034-102666 Demyelinating Disease Multiple Sclerosis MS is still a disease of unknown pathogenesis, although generally viewed as autoimmune in type. Incidence is higher in women, and in Caucasians of Northern…
Vasculitis and Vasculitides
10.1055/b-0034-102663 Vasculitis and Vasculitides Sickle Cell Disease There is a high incidence of infarcts in patients with sickle cell disease, with these commonly watershed in distribution. Clinically silent lesions, ischemic…
Infection and Inflammation
10.1055/b-0034-102665 Infection and Inflammation Parenchymal Abscess The typical appearance on MR and CT of a brain abscess is that of a round mass lesion with central necrosis, demonstrating a distinctive…
Vascular Lesions
10.1055/b-0034-102664 Vascular Lesions Aneurysms The incidence in the normal population of saccular (berry) aneurysms differs widely between reports, but is likely well below 5%. They are multiple in 15% of…
Cerebrospinal Fluid Disorders
10.1055/b-0034-102669 Cerebrospinal Fluid Disorders Obstructive Hydrocephalus, Intraventricular This entity is defined by obstruction proximal to the foramina of Luschka and Magendie. It can be acute or chronic (compensated) ( Fig….
Nonneoplastic Cysts
10.1055/b-0034-102668 Nonneoplastic Cysts Arachnoid Cyst Arachnoid cysts are common, benign, CSF filled lesions. They represent 1% of all intracranial masses. In terms of etiology, they can be congenital, inflammatory, or…
Congenital Malformations
10.1055/b-0034-102655 Congenital Malformations MR is the modality of choice for evaluation of all congenital malformations of the brain, with the exception of the craniosynostoses. In individual instances, some findings may…
Infarction
10.1055/b-0034-102661 Infarction In young patients, the etiologies for cerebral infarction are many and varied, in distinction to adults. Leading causes include congenital and acquired heart disease, together with sickle cell…
