Chordoid Meningioma: Literature Review
Arq. bras. neurocir; 39 (1), 2020
Publication year: 2020
Chordoid meningiomas (CMs) are a rare subgroup of tumors, accounting for 0.5% of
all meningiomas. Chordoid meningioma tumors correspond to World Health Organization
(WHO) Grade II lesions and behave aggressively, with an increased likelihood of
recurrence. There are few genetic studies about CMs, but we understand that there is
deletion at many chromosomal loci. Histologically, CMs are characterized by strands
and cords of meningothelial cells arranged in a mucinous stroma. Morphologically, it
can mimic other chondroid and myxoid tumors within the brain and its vicinity, thus
posing a diagnostic challenge. Chordoid meningiomas have an aggressive clinical
course and a propensity to recur compared with classical meningiomas. The goal of the
treatment is surgery, with total resection of the tumor; however, due to its high degree
of recurrence, radiotherapy is often necessary as an adjuvant treatment.