Angiomatous, Predominantly Cystic Meningiomas: A Case Report and Literature Review of a Unique Group of Meningiomas.

Meningiomas are the most common intracranial benign tumors. Among them, cystic angiomatous meningiomas are very rare entities, making preoperative differentiation with other tumors challenging. We present a case of parasagittal angiomatous meningioma with a large associated cyst that mimicked a hemangioblastoma on preoperative imaging. It was treated surgically. We also performed a literature review and identified a total of 10 articles in the English language, describing a few similar cases of cystic angiomatous meningiomas. Conclusions: This report of a rare case of cystic angiomatous meningioma with a unique cystic presentation on preoperative imaging adds to the scarce body of literature on the topic. Surgery is ultimately the key method to make a diagnosis and to decompress the brain parenchyma in these patients.