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Updated: Mar 19, 2026

Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
Spontaneous subdural haemorrhage from an arachnoid cyst: a case report and literature review
A Hall1, M A J White2, L Myles2
1a Institute of Neurological Sciences , Queen Elizabeth Hospital , Glasgow , UK.
Abstract:
We discuss a spontaneous subdural haematoma (SDH) arising from an arachnoid cyst in a healthy adult male, presenting with headache and vomiting. Imaging revealed a large SDH communicating with an arachnoid cyst and intracystic haemorrhage. The patient fully recovered with surgical evacuation. We also discuss the causes of spontaneous SDH, and specific risk factors for bleeding in arachnoid cysts, as well as review the literature on spontaneous SDH from arachnoid cysts - a rare but serious complication.

