[Intracranial meningiomas; standard diagnostic procedure and results of surgical treatment].

The aim of the study is to define radiological parameters which may indirectly indicate invasive expansion of a meningioma and thus forecast potential risks of postoperative neurological deficits. The study group includes 40 adult patients in comparable physical conditions (age 18-75, CRS 70-100, ASA 1-2) with meningiomas, affecting the brain tissue only. The results indicate that unfavorable parametres, predicting potential postoperative neurological deficits include: growth of a meningioma in eloquent regions and presence of a peritumoral oedema. Positive parametres, indicating that no neurological deficit would arise, include: dural supply, visible brain-tumor barrier, non-eloquent location of a meningioma and absence of a peritumoral oedema. The study results suggest that provided the two last parametres are present, a patient need not be exposed to risks of invasive selective angiography.