A case of intracranial migration and rapid spontaneous resolution of traumatic acute subdural hematoma

Traumatic acute subdural hematoma (ASDH) is one of the most destructive forms of traumatic brain injury (TBI), involving estimated mortality rates of 40-60% . Traumatic ASDH is a frequently seen life-threatening condition requiring emergency intervention. Spontaneous resolution and migration of ASDH are both rare entities, the causes of which are still not fully understood. The few existing cases in the literature of both rapid spontaneous resolution of SDH and of subdural migration are generally in the form of case reports. Publications concerning migration of SDH mainly involve migration to the lumbar region. We encountered no previous reports of intracranial migration of ASDH accompanied by rapid spontaneous resolution.  This report describes a case of intracranial migration and spontaneous resolution within 24 h in a 61-year-old male patient with traumatic Traumatic acute subdural hematoma (ASDH), together with a discussion of the relevant mechanisms.