1-Enlargement of a whole or a part of one cerebral hemisphere due to abnormal proliferation and its corresponding ventricle.
2-Calcification in both white and grey matter.
3-Gliosis of the white matter.
4-Radiological Appearance:
-One hemisphere is enlarged than the other.
-One ventricle is enlarged than the other.
-Straightening of the frontal horn of the enlarged ventricle which is pointing anteriorly(most important sign).
-Loss of the grey-white matter interface.
-Agyria, pachgyria, polymicrogyria and heterotopia.
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