Computed tomographic findings in metastatic dural carcinomatosis

Area of Science:

• Neurology
• Neurosurgery
• Radiology

Background:

• Dural carcinomatosis is a rare condition involving cancer spread to the dura mater.
• Chronic subdural hematomas (CSDH) are common, often associated with head trauma.
• Subdural membranes can form in both conditions, complicating diagnosis.

Observation:

• A patient presented with radiographic findings suggestive of a right frontal CSDH.
• Surgical exploration via burr-hole drainage was performed based on CT scan results.
• No CSDH or subdural effusion was identified during the procedure.

Findings:

• The surgical findings revealed metastatic dural carcinomatosis, not a CSDH.
• The thickened subdural membrane mimicked the appearance of membranes seen in CSDH.
• This highlights a potential diagnostic pitfall in neuroimaging.

Implications:

• Dural carcinomatosis should be considered in the differential diagnosis of thickened subdural membranes, especially in patients without a history of trauma.
• Accurate diagnosis is crucial for appropriate treatment and patient management.
• Radiographic features can overlap, necessitating careful clinical correlation.