A fatal acute subdural hematoma occurring after evacuation of "contralateral" chronic subdural hematoma.

Although chronic subdural hematomas (SDHs) are bilateral in about 20% of the cases, an acute SDH in one side associated with chronic SDH in "contralateral" side is an extremely rare and devastating condition. In this report, a case of "contralateral" acute SDH occurring after evacuation of chronic SDH in one side is presented. The clinical history, complaints, neurological and neuroradiological findings, and pathophysiological mechanisms of this uncommon entity are discussed and related literature is reviewed.