Cerebral cortical laminar necrosis in children: imaging findings and clinical features / 实用放射学杂志

ABSTRACT

Objective To evaluate the imaging features and causes of cerebral cortical laminar necrosis(CLN) in children,to improve understanding this sign.Methods The imaging and clinical data of 33 children diagnosed with CLN were analyzed retrospectively.The imaging features of CT and MRI were summarized and compared according to their etiologies.Results Children cerebral CLN involved multiple lobes of bilateral hemicerebrum, including the cortical region, subcortical region and basal ganglia region, and linear or gyral shape,patchy shape and punctate shape abnormal density or signal were demonstrated.The typical imaging features were high-signal intensity over the lateral cortical surfaces or along the gyri on T1WI and FLAIR.Diffusion weighted imaging(DWI) showed high signal with restricted diffusion on acute-stage, and Gd-DTPA enhancement demonstrated linear or gyrate enhanced appearance on early-stage.The extent of CLN of cerebral infarction was relatively limited.Acute anoxic encephalopathy showed an early imaging change and extensive involvement.While chronic anoxic encephalopathy and inflammatory encephalopathy showed a late imaging change and a longer existence.Conclusion Children cerebral CLN may have various causes and imaging features,and show characteristic chronological signal changes on imaging studies.The different causes result in the different patterns for CLN in distribution and time distribution.