Acute Subdural Hematoma without Subarachnoid Hemorrhage or Intraparenchymal Hematoma Caused by Rupture of a Posterior Communicating Artery Aneurysm: Case Report and Review of the Literature

Abstract Background Acute subdural hematoma without subarachnoid hemorrhage or intraparenchymal hematoma is rare. Case Report We report on a 47-year-old women without previous trauma who presented with an acute subdural hematoma without subarachnoid hemorrhage. The hematoma was evacuated immediately. Further evaluation with a cerebral four-vessel angiography revealed a left-sided posterior communicating artery aneurysm that was occluded by endovascular embolization. The patient recovered without neurological deficit. Conclusions Ruptured intracranial aneurysm should be considered as a cause of nontraumatic subdural hematoma. Immediate subdural hematoma removal after aneurysm coiling can be performed in such patients, even those in poor neurological condition.