Haemosiderin lining a porencephalic cyst arising from lateral wall of the left lateral ventricle. High T1 and high T2 signal residual clot is seen within the dependent portion of the cyst. Asymmetrical ventriculomegaly - left 15 mm and right 11 mm. The third ventricle is enlarged and measures 4.7 mm.
Conclusion: Porencephalic cyst secondary to in utero grade IV intraventricular haemorrhage.