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Background: Postoperative acute epidural hematoma (EDH) is a well-known serious complication that usually occurs at the operated site after cranial surgery. However, epidural bleeding, distant from the site of the previous craniotomy, is relatively rare and may sometimes cause significant neurological morbidity or even mortality. We report such a case. Case Description: A 35-year-old woman, previously healthy, was operated on for a left temporo-parieto-fronto-insular anaplastic astrocytoma. Between 2 and 4 h after the surgery, the patient had trouble waking-up following the general anesthesia. Emergent computed tomography (CT) scan revealed an acute bifrontal EDH away from the initial surgical field. The patient underwent an immediate reoperation, a decompressive bifrontal craniotomy, and the evacuation of the hematoma. Despite the neurologic improvement, she died 24 days after the surgery due to severe sepsis caused by pulmonary infection with pseudomonas aeruginosa. Conclusion: The pathophysiology of postoperative remote EDH is poorly understood, although various hypotheses have been suggested including the loss of tamponade effect, the vasomotor mechanisms, and the coagulopathy. As seen in the present case report, we suspected that the intensive use of perioperative mannitol may also promote this complication. In the early postoperative period, every patient with neurological deterioration should have a rapid cranial CT-scan because early detection and removal of postoperative acute EDH can be life-saving.

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