Chronic subdural hematoma in the cerebellopontine angle

Area of Science:

• Neurology
• Neurosurgery
• Pathology

Background:

• Cerebellopontine angle (CPA) masses can present with diverse etiologies.
• Distinguishing CPA lesions requires thorough clinical, radiological, and pathological evaluation.

Observation:

• A 32-year-old male presented with clinical and radiological findings suggestive of a left CPA mass.
• Surgical exploration identified a cyst containing 20 ml of altered blood.

Findings:

• Microscopic examination of the cyst wall revealed features consistent with an organizing subdural hematoma.
• The patient reported no history of head injury, complicating the diagnosis.

Implications:

• This case highlights the importance of considering subdural hematomas in the differential diagnosis of CPA masses, even without a clear history of trauma.
• Organizing subdural hematomas can mimic other CPA pathologies, necessitating detailed histopathological analysis.
• Further investigation into potential occult causes of subdural bleeding may be warranted in such cases.