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Chronic intraventricular encapsulated hematoma presenting unique radiological features: a case report
Hiroshi Ooba1, Tohru Kamida, Mitsuo Isono
1Department of Neurosurgery, Oita Medical University, 1 Idaigaoka 1-1, Hazama-machi, Oita, Japan 879-5593.
Surgical Neurology
|March 14, 2003
Summary
Chronic encapsulated hematomas are rare, with uncertain causes. This case highlights a lateral ventricle hematoma potentially resolving spontaneously, suggesting neo-vascularization isn't the only expansion factor.
Area of Science:
- Neurology
- Pathology
Background:
- Chronic encapsulated hematoma is a rare condition with unclear underlying mechanisms.
- Understanding its pathophysiology is crucial for diagnosis and treatment.
Observation:
- A 68-year-old woman presented with progressive gait disturbance.
- MRI revealed a dumbbell-shaped mass in the right lateral ventricle, mimicking a hemorrhagic tumor and cystic mass.
- Cerebral angiography showed an arteriovenous shunt in the ventricle wall.
Findings:
- Operative findings identified a hematoma with varied coagulation stages and a granulomatous solid mass.
- Histologic examination confirmed both components were consistent with chronic encapsulated intracerebral hematomas.
- One part of the mass consisted solely of granulomatous tissue, suggesting spontaneous resolution.
Implications:
- The presence of granulomatous tissue indicates potential spontaneous resolution of chronic encapsulated hematoma.
- Neo-vascularization within the hematoma capsule may not be the sole driver of expansion.
- This finding contributes to understanding the complex pathophysiology of these rare lesions.