Monday, February 6, 2012

Hemimegalencephaly

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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