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Updated: Jul 3, 2026

Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
Arachnoid cyst and arachnoiditis following idiopathic spinal subarachnoid haemorrhage
F Ginanneschi1, L Palma, A Rossi
1Department of Neurological and Behavioral Sciences, Unit of Clinical Neurophysiology, University of Siena, Italy. ginanneschi@unisi.it
Abstract:
We describe 8 years follow-up of a case of arachnoid cyst developing after spinal subarachnoid haemorrhage. The cyst was removed by hemilaminectomy; an arachnoid cyst of the same size was again observed by MRI 2 weeks later. We suggest that conservative approach could be the best choice.
Insights
Spinal arachnoid cysts can recur after surgical removal. This case study suggests a conservative approach may be preferable for managing these post-hemorrhage cysts.
Area of Science:
- Neurosurgery
- Neurology
- Spinal Cord Imaging
Background:
- Spinal subarachnoid hemorrhage can lead to the development of arachnoid cysts.
- Post-hemorrhagic arachnoid cysts pose a management challenge in neurosurgery.
Observation:
- A case of recurrent arachnoid cyst following surgical excision is presented.
- Magnetic Resonance Imaging (MRI) confirmed cyst recurrence two weeks post-hemilaminectomy.
Findings:
- Surgical intervention (hemilaminectomy) for spinal arachnoid cysts may not prevent recurrence.
- The cyst reappeared with similar dimensions shortly after surgical removal.
Implications:
- Conservative management strategies should be considered for spinal arachnoid cysts.
- Further research is needed to determine optimal treatment protocols for recurrent spinal arachnoid cysts.
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