Meningitis With Cerebral Vasculitis in Children

Purulent meningitis are life-threatening diseases in childhood. Cerebral vasculitis have been described in bacterial meningitis, but poor is known about their physiology and their impact on outcome. The investigators decide to realize a retrospective mono-centric study carried out at Montpellier university hospital which looks back at a 7-year study(2009-2016). The Investigators selected purulent meningitis cases based on the bacteriological data provided by the HDB (hospital data base). The Investigators divides in two groups : Group A if patients present a cerebral vasculitis ( radiologic diagnostic by RMI or tomodensitometry), in all, cases the diagnosis of vasculitis was confirmed by a radiologist specialised in neuropaediatrics by a second reading;Group B purulent meningitis with a cerebral vasculitis imaging. Tuberculous meningitis, meningitis in CSF shunt, and in patients having chemotherapy were excluded. The investigators report clinical and biological finding, inflammatory marker at the onset. The Investigators register also the clinical evolution and sequelae