



OBSTRUTIVE HYDROCEPHALUS


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REMEMBER colloid cyst DOESNT ENHANCE!!!

AQUEDUCTAL STENOSIS:
-acquired causes?
Extrinsic compression
tectal plate glioma / pineal tumour / posterior fossa tumour / cerebral vascular malformation
Intrinsic stenosis
infection: meningitis/ventriculitis
subarachnoid haemorrhage (SAH)

AQUEDUCTAL STENOSIS:
-congenital causes?
congenital causes:

aqueductal webs or diaphragms / gliosis


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TECTAL GLIOMAS
major points


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4TH VENT OBSTRUCTION:
-causes?


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Regarding EPENDYMOMA, remember:

OBSTRUCTIVE COMMUNICATING HYDROCEPHALUS:
-causes?

