Postoperative Contralateral Spontaneous Epidural Hematoma

Postoperative contralateral extradural hematoma (EDH) is a rare condition.[1] The dura lies closely adherent to the calvarium which prevents collection of any hematoma. However, due to trauma or nontraumatic causes, there can be acute collection of blood in the space resulting in EDH. The most common cause of EDH is trauma of various etiologies. Ten percent of all traumatic head injuries result in EDH. Traumatic injuries consist of road traffic accidents and violent collisions of the head, which induce bleeding due to the tearing of meningeal vessels like arteries, veins, or sinuses. Nontraumatic spontaneous EDH causes are rare. Spontaneous EDH patients are categorized into primary (cryptogenic) and secondary EDH. Nontraumatic causes of EDH are coagulation abnormalities, blood dyscrasias like Sickle cell disease and hemophilia, vascular malformations, dural arteriovenous fistulae, infective causes like meningitis, etc.[2]