Periventricular haemosiderin deposition in patients with congenital hemiplegia. 
Two patients with congenital hemiplegia without obvious prenatal, perinatal or neonatal difficulties showed linear low signal intensity lesions along the wall of the dilated lateral ventricles without any parenchymal lesions on T2- and proton density weighted MRI.  Haemosiderin deposition secondary to intra-uterine subependymal haemorrhage with intraventricular haemorrhage was considered most likely from the signal intensity, distribution and clinical histories.  MRI, which is the only means of detecting haemosiderin deposition, could be beneficial for evaluating the pathogenetic cause of congenital hemiplegia.