Meningioma of the Fourth Ventricle: Literature Review
Arq. bras. neurocir; 39 (1), 2020
Publication year: 2020
Meningiomas are among the most common central nervous system tumors, with an
incidence that ranges from 15% to 40% of intracranial tumors. Of these, only 0.5% to 3%
are intraventricular, and the rarest of them occurs in the fourth ventricle.
Fourth-ventricle meningiomas originate generally fromthe choroid plexus and have no
dural adhesions. Most often, they manifest in young patients, around 41 years of age,
with a possible predominance in females, through intracranial hypertension and
cerebellar syndromes. The treatment consists of surgical resection, which commonly
presents good results due to the characteristics of the tumor. So, for better preoperative
planning, the radiological differentiation of the most frequent tumors in this
location is important.
Themost common histologic subtypes are fibroblastic and meningothelial, both grade
I according to the World Health Organization (WHO), although there are reports of
tumors of grades II and III.
We report a case ofmeningioma of the fourth ventricle operated in our institution, and
we have conducted a literature review, through which we found that 57 cases have
been reported so far, with the first one reported in 1938.