CT Brain

CT Brain

CT before and after contrast showing posterior fossa mass with total enhancement

žNote total homogenous enhancement

žNot dilated ventricles denoting obstructive hydrocephalus

Heterogeneous enhancement

With calcification

ependymoma

žAppears as hyperdense lesion in CT without contrast surrounded by hypodense edema with positive mass effect

žAppears in CT with contrast as a hypodense lesion with enhancement in the wall surrounded by hypodense edema and may cause positive mass effect

žAppears in CT with contrast  as a mass with heterogenous enhancement surrounded by hypodense edema with positive mass effect

žAppears in CT with contrast as brain tumor, but being multiple suggest metastasis

žDepressed fracture of the left parietal bone

ž9-month-old boy with progressive enlargement of the head. Intra- ventricular mass with hydrocephalus mostly choroid plexus papilloma

žHypodense area in CT brain without contrast

Characteristic biconvex appearance

žRight subdural hematoma with a concave inner margin

žHypodense lesion in CT without contrast

žDilatation of the ventricular system