Related Experiment Videos
Symptomatic intraventricular arachnoid cyst in an elderly man
1Department of Neurosurgery, University of the Ryukyus School of Medicine, Okinawa, Japan.
Acta Neurochirurgica
|January 1, 1995
Summary
This case report details an intraventricular arachnoid cyst in an elderly man. A ball-valve mechanism likely caused the cyst
Area of Science:
- Neurology
- Neurosurgery
- Pathology
Background:
- Intraventricular arachnoid cysts are rare intracranial lesions.
- Progressive neurological deficits can occur due to mass effect.
Observation:
- A 63-year-old man presented with a five-year history of progressive gait disturbance.
- CT scans revealed a large, non-enhancing cyst within the left lateral ventricle.
- CT cisternography demonstrated contrast accumulation and retention within the cyst.
Findings:
- Electron microscopy confirmed an arachnoid cyst diagnosis after partial resection.
- Histopathological examination was inconclusive.
- Biochemical analysis showed no significant difference between cyst fluid and cerebrospinal fluid (CSF).
Implications:
- A ball-valve mechanism is proposed as the cause of cyst enlargement and symptom progression.
- This case highlights the diagnostic challenges of intraventricular arachnoid cysts in the elderly.
- Surgical intervention may be necessary for symptomatic lesions.