脑室内脑膜瘤
Intraventricular Meningioma
作者信息
Mayol Del Valle Miguel, De Jesus Orlando
机构信息
University District Hospital, Puerto Rico Medical Center
University of Puerto Rico, Medical Sciences Campus, Neurosurgery Section
Intraventricular meningiomas show similar characteristics to those found in the extra-axial space. Their cells of origin are the same; however, extra-axial meningiomas are derived from the arachnoid cap cells, naturally occurring near venous sinuses and dural edges. Intraventricular meningiomas originate from the choroid plexus' stroma and arise at the tela choroidea. Here, arachnoid cells are found secondary to the embryologic origin of the choroid plexus. Most meningiomas are considered to be benign World Health Organization (WHO) grade I, slow-growing lesions. However, some may progress to atypical or anaplastic histopathological types.
脑室内脑膜瘤表现出与轴外空间脑膜瘤相似的特征。它们的起源细胞相同；然而，轴外脑膜瘤起源于蛛网膜帽细胞，自然发生于静脉窦和硬脑膜边缘附近。脑室内脑膜瘤起源于脉络丛的间质，发生于脉络膜组织。在此，由于脉络丛的胚胎起源，可发现蛛网膜细胞。大多数脑膜瘤被认为是世界卫生组织（WHO）I级良性、生长缓慢的病变。然而，一些可能进展为非典型或间变性组织病理学类型。
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