Acute bleeding into the dural-outer membrane space after burr hole drainage for chronic subdural haemorrhage

'Subarachnoid cyst' after evacuation of chronic subdural hematoma: Case report of an unusual postoperative morbidity

“…Chronic subdural hematoma (CSDH) is one of the most common types of intracranial hemorrhage disease managed in most neurosurgical departments. [ 1 2 ] Currently, CSDH has the best prognosis of all patients with intracranial hematoma. [ 3 ] Common risk factors for CSDH include increased incidence of falls, especially in the elderly,[ 4 5 6 ] excessive alcohol intake,[ 7 ] increased use of anti-thrombotic medications and brain atrophy causing venous fragility.…”

“…[ 3 ] Common risk factors for CSDH include increased incidence of falls, especially in the elderly,[ 4 5 6 ] excessive alcohol intake,[ 7 ] increased use of anti-thrombotic medications and brain atrophy causing venous fragility. [ 1 ]…”

“…The common post-operative complications reported in the literature include acute epidural hemorrhage, acute subdural hematoma, intracranial hematomas,[ 8 ] tension pneumocephalus, ischemic cerebral infarction and one reported case of acute bleeding into the dural-outer membrane space. [ 1 ] However, this is the first case of a ‘subarachnoid cyst’ caused by iatrogenic irrigation of a CSDH, with resultant long-term scar epilepsy. Here, we present the case study, review the relevant literature and present our hypothesis for such an unusual postoperative complication.…”

“…[3] Common risk factors for CSDH include increased incidence of falls, especially in the elderly, [4][5][6] excessive alcohol intake, [7] increased use of anti-thrombotic medications and brain atrophy causing venous fragility. [1] The common post-operative complications reported in the literature include acute epidural hemorrhage, acute subdural hematoma, intracranial hematomas, [8] tension pneumocephalus, ischemic cerebral infarction and one reported case of acute bleeding into the dural-outer membrane space. [1] However, this is the first case of a 'subarachnoid cyst' The patient's weakness gradually self-improved over the next 24 hours without any need for surgical intervention.…”

“…[1] The common post-operative complications reported in the literature include acute epidural hemorrhage, acute subdural hematoma, intracranial hematomas, [8] tension pneumocephalus, ischemic cerebral infarction and one reported case of acute bleeding into the dural-outer membrane space. [1] However, this is the first case of a 'subarachnoid cyst' The patient's weakness gradually self-improved over the next 24 hours without any need for surgical intervention. Owing to his clinical improvement, decision was made for close monitoring with serial follow-up CT scans.…”