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Updated: May 1, 2026
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3D Modeling of the Lateral Ventricles and Histological Characterization of Periventricular Tissue in Humans and Mouse
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Intracranial Arachnoid Cysts in Adulthood: A Retrospective, Multicenter Magnetic Resonance Imaging-Based Study.
Murat Zaimoglu1, Ozgur Orhan, Baran Can Alpergin
1Ankara University, Faculty of Medicine, Department of Neurosurgery, Ankara, Türkiye.
Turkish Neurosurgery
|October 30, 2024
Summary
This study analyzed 15,108 cranial MRIs for intracranial arachnoid cysts (ACs). Mega cisterna magna (MCM) was more common with supratentorial ACs, highlighting location-specific associations.
Area of Science:
- Neurology
- Radiology
- Neuroimaging
Background:
- Intracranial arachnoid cysts (ACs) are common incidental findings on cranial MRI.
- Headache evaluations frequently lead to incidental AC detection.
- Understanding AC characteristics is crucial for diagnosis and management.
Purpose of the Study:
- To evaluate cranial MRI features of intracranial arachnoid cysts (ACs).
- To determine AC incidence based on demographics, location, and size.
- To assess associations between ACs and hydrocephalus, mega cisterna magna (MCM), bone erosion, and midline brain shift.
Main Methods:
- Retrospective review of 15,108 cranial MRI scans from adult patients (20-70 years) with headache evaluations (2012-2022).
- Analysis of incidentally detected ACs, excluding patients with prior craniotomy/craniectomy.
- Evaluation of AC features including sex, age, location, size, side, Galassi type, and associated findings.
Main Results:
- No significant difference in hydrocephalus association between supratentorial and infratentorial ACs (p=0.557).
- Significant difference in mega cisterna magna (MCM) association based on AC location (p=0.008).
- MCMs were more frequently observed with supratentorial ACs compared to infratentorial ACs.
Conclusions:
- Increased MRI use leads to higher incidental AC detection rates.
- Asymptomatic ACs usually require monitoring; symptomatic ones may need surgical intervention.
- Surgical options for symptomatic ACs include fenestration, aspiration, or shunting.
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