Subacute and chronic extradural haematomas.

Over an 8-year period (1982-1989) 43 patients with subacute and chronic extradural haematomas were treated. The clinical picture of the patients, computed tomography (CT) as well as operative findings and prognosis were evaluated. The radiological picture as seen on CT was correlated with the time interval elapsing between initial trauma and surgery. Operative findings are discussed and the terms 'subacute' and 'chronic' are defined.