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Obstructive hydrocephalus associated with arachnoid cyst in the elderly
Yasuo Tohma1, Mitsuhiro Hasegawa, Hiroya Nakau
1Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Japan. tohma@ns.m.kanazawa-u.ac.jp
Summary
Symptomatic frontal arachnoid cysts are rare in the elderly. This case suggests brain compression and obstructive hydrocephalus may cause these cysts to become symptomatic in older individuals.
Area of Science:
- Neurology
- Neurosurgery
- Radiology
Background:
- Arachnoid cysts are typically congenital and often asymptomatic, especially in adults.
- Symptomatic arachnoid cysts are more commonly diagnosed in pediatric and young adult populations.
- Frontal arachnoid cysts can cause mass effect and neurological deficits.
Observation:
- An elderly patient presented with symptoms attributed to a frontal arachnoid cyst.
- The cyst was associated with significant hydrocephalus, indicating increased intracranial pressure.
- The patient's age made the symptomatic presentation unusual for this condition.
Findings:
- The arachnoid cyst caused mass effect on adjacent brain structures.
- Obstructive hydrocephalus was identified as a key complication.
- The combination of factors led to the cyst becoming clinically significant in an elderly patient.
Implications:
- This case highlights the potential for arachnoid cysts to manifest symptomatically in the elderly.
- Understanding the mechanisms of cyst-induced hydrocephalus is crucial for diagnosis and management.
- Further research may elucidate factors contributing to late-onset symptomatic arachnoid cysts.