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CASE REPORT
Year : 2016  |  Volume : 11  |  Issue : 3  |  Page : 316

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


Department of Neurosurgery, National Neuroscience Institute, Singapore

Correspondence Address:
Dr. Low Y. Y Sharon
11, Jalan Tan Tock Seng, National Neuroscience Institute
Singapore
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1793-5482.144210

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Burr-hole drainage of chronic subdural hematomas are routine operative procedures done by neurosurgical residents. Common postoperative complications include acute epidural and/or subdural bleeding, tension pneumocephalus, intracranial hematomas and ischemic cerebral infarction. We report an interesting post-operative complication of a 'subarachnoid cyst' after burr-hole evacuation of a chronic subdural hematoma. The authors hypothesize that the 'cyst' is likely secondary to the splitting of the adjacent neomembrane within its arachnoid-brain interface by iatrogenic irrigation of the subdural space. Over time, this 'cyst' develops into an area of gliosis which eventually causes long-term scar epilepsy in the patient. As far as we are aware, this is the first complication of such a 'subarachnoid cyst' post burr-hole drainage reported in the literature.


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