EAR infection extending into the cranial cavity

CT brain axial cuts

there is sclerosis of right sided mastoid air cells.

a small lytic lesion is seen in small cuts involving the right mastoid.

a well defined marginally enhancing hypodense lesion is seen occupying the right CP angle.The lesion is compressing the fourth ventricle resulting in hydrocephalic changes....temporal horns are dilated

---possibility of cholesteatoma with an abcess can not be excluded