Computed tomography of isodense subdural hematomas.

Eight cases of isodense subdural hematomas were evaluated by computed tomography (CT). CT demonstrated varying degrees of compression of a lateral ventricle, shift of the midline structures and, in some cases, obliteration of the subarachnoid sulci on the side of the lesion. Contrast enhancement was helpful in one case and demonstrated medial displacement of enhanced cortical margins away from the inner table of the skull. Two of the eight patients had no clear history of trauma.