Cystic meningiomas

Abstract

Twenty-two cases of unusual intracranial meningioma associated with a cyst are reported and 144 published cases reviewed. The complex mechanisms leading to the formation of the cyst within the meningioma are analyzed on the basis of the surgical and histopathological evidence. The neuroradiological features (Computed Tomography and Angiography) which supply a correct preoperative diagnosis are discussed. It is clear from the literature how difficult preoperative diagnosis is, being possible only in 38% of cases with CT scanning and in 13% with angiography. It is necessary to remove not only the solid portion of the meningioma but also the cyst wall in order to prevent a recurrence. This is technically difficult for the type II intratumoural variety of Nauta's classification.

Atypical Meningioma With Large Cyst-Case Report-

“…6,10,24,30,36,38) The frequencies of the subtypes of meningioma with cyst is similar to those of all meningiomas. 10,26,28) However, the frequency of atypical meningioma among cystic meningiomas has recently been reported to be higher than that among all meningiomas. 5,36) Here, we present a case of atypical meningioma with a large cyst arising from the falx.…”

Peritumoral cystic meningioma: A report of two cases and review of the literature

“…The most common site for the appearance of cystic meningiomas is the cerebral convexity, particularly the frontal and parietal lobes, while the cerebral falx is the second most frequent location (2). Furthermore, cystic meningiomas can also be identified in the cerebellopontine angle, olfactory groove, suprasellar, falx and ventricle, olfactory groove trigeminal nerve or optic nerve (3,5,6,(14)(15)(16)(17)(18)(19).…”

“…Cystic meningioma is a relatively rare condition with incidence rates ranging between 1.7 and 10% worldwide (1)(2)(3)(4)(5). While meningiomas are considered more likely to appear in females, no substantial difference was identified in the incidence rates between the two genders, according to an analysis of 166 cases of cystic meningioma (2).…”

“…While meningiomas are considered more likely to appear in females, no substantial difference was identified in the incidence rates between the two genders, according to an analysis of 166 cases of cystic meningioma (2). The clinical manifestation of cystic meningioma include, but are not limited to: Headache, seizure, dizziness, personality changes and motor disturbance (1)(2)(3)(4)(5)(6)(7)(8)(9)(10). Surgical removal of the entire tumor and its cyst remains the predominant treatment for cystic meningioma (1)(2)(3)(4)(5)(6)(7)(8)(9)(10).…”

“…The clinical manifestation of cystic meningioma include, but are not limited to: Headache, seizure, dizziness, personality changes and motor disturbance (1)(2)(3)(4)(5)(6)(7)(8)(9)(10). Surgical removal of the entire tumor and its cyst remains the predominant treatment for cystic meningioma (1)(2)(3)(4)(5)(6)(7)(8)(9)(10). Cystic meningioma may pose a diagnostic dilemma preoperatively, since it is occasionally difficult to differentiate among glioma, hemangioblastoma, craniopharyngioma and metastatic brain tumor (6)(7)(8)(9)(10).…”