Anaplastic or malignant meningiomas that are classified as World Health Organization
(WHO) grade III account for less than 1% of all meningiomas diagnosed. Despite the
aggressive course, distant metastases are a rarity, occurring in only 0.1% to 0.2% of
cases. We report the case of a 56-year-old woman wh...
Introduction Meningiomas are the most common primary intracranial tumors,
accounting for up to 35% of the neoplasms in this category. Approximately 10–20%
of these neoplasms are histologically atypical, and the lymphoplasmacyte-rich meningioma
(LPM) corresponds to a very rare subtype of meningioma that...
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...
ABSTRACT The study reviewed the histology of cases of grade I meningiomas with spontaneous necrosis, grade I without necrosis and grade II meningiomas, to evaluate the histological and immunohistochemical factors of the patients' prognosis, while correlating the clinicopathological features with the clin...
Meningiomas are common, usually benign tumors of the central nervous system that have a high rate of post-surgical recurrence or regrowth. We determined expression of the proteins merlin, NDRG2, ERBB2, and c-MYC in meningiomas using immunohistochemistry and assessed relationships between protein expressi...
