A case of cerebral cysticercosis is reported in a 49-year-old female w
ho presented with headache, nausea, and vomiting. Lumbar CSF showed th
e findings of mild aseptic meningitis. CT scan revealed an enlargement
of the left ambient cistern and a small cystic lesion in the left fro
ntal cortex. MRI demonstrated multilobular cysts in the left ambient c
istern with enhancement of their capsules, which compressed and distor
ted the midbrain. The cysts were surgically excised, and histological
examination of the specimen disclosed characteristic features of cysti
cercus with viable larva. An excellent value of MRI in the diagnosis o
f intracisternal cysticercosis is emphasized.