Fat deposition adjacent to chronic subdural hematoma: CT demonstration

Computed tomography of the head in a patient with bilateral chronic subdural hematomas demonstrated areas of fat density closely approximating the hematomas. The persistent fatty nature of the CT finding was confirmed by subsequent magnetic resonance and CT performed 1 month and 3 years later. Although an intracerebral hemorrhage with transient presence of fatty material has been described in an alcoholic hyperlipemic patient, this case shows fatty deposition adjacent ot subdural hemorrhage without any known predisposing factors.