Immunohistochemical expression of matrix metalloproteinase -9 in invasive meningioma.
Background: Meningioma is a common intracranial tumor arising from the meningothelial (arachnoid) cells. Meningiomas are divided into 15 histological subtypes and three grades, including benign (grade I), atypical (grade II) and anaplastic (grade III).It is important to correctly decide whether a meningioma isbrain-invasive or not.Tumor invasion can be described as a stepwise process involving the degradation of the extracellular matrix ... Read more