Intraventricular meningioma with drop metastases and subgaleal metastatic nodule

Area of Science:

• Neuro-oncology
• Neurosurgery
• Pathology

Background:

• Malignant intraventricular meningiomas are exceptionally rare intracranial neoplasms.
• Literature review reveals only seven previously reported cases.
• Understanding their behavior is crucial for effective patient management.

Observation:

• A 53-year-old woman presented with a malignant intraventricular meningioma.
• The tumor exhibited cerebrospinal fluid (CSF) drop metastases.
• An unusual implantation metastatic subgaleal nodule was also identified.

Findings:

• This case represents an eighth documented instance of malignant intraventricular meningioma.
• The presence of both CSF drop metastases and a distant subgaleal nodule highlights aggressive tumor dissemination.
• Malignant meningiomas demonstrate a propensity for rapid and widespread spread.

Implications:

• Immediate postoperative radiotherapy should be strongly considered for malignant intraventricular meningiomas.
• Aggressive treatment strategies are necessary to combat the high recurrence and metastatic potential.
• Further research into the aggressive behavior and optimal management of these rare tumors is warranted.