Meningioma associated with a large cyst.

Area of Science:

• Neurosurgery
• Neuroradiology
• Oncology

Background:

• Meningiomas are typically benign tumors arising from the meninges.
• Large cystic components associated with meningiomas are uncommon, particularly in convexity locations.

Observation:

• A case study of an adult patient presenting with a frontoparietal convexity meningioma.
• The meningioma was noted to be small, but surrounded by an unusually large cyst.
• The cyst fluid exhibited exceptionally high protein levels and lacked a discernible cyst wall.

Findings:

• The radiological appearance of this rare meningioma-associated cyst can be mistaken for a malignant neoplasm.
• Histopathological analysis confirmed the presence of a meningioma and characterized the cystic fluid properties.

Implications:

• Understanding the distinct radiological features of this entity is crucial for accurate diagnosis.
• Distinguishing this benign condition from aggressive tumors can prevent unnecessary aggressive treatments.
• Further research into the pathogenesis of such large cystic meningiomas may elucidate underlying mechanisms.