Neuroimaging findings in the initial phase of development of high grade cortical astrocytomas.

Objectives: To describe the neuroradiological characteristics of a series of high grade cortical astrocytomas in the initial phase of development and their pattern of growth during a short time period.

Material And Methods: This was a retrospective observational study of the neuroradiological findings in six patients diagnosed with high grade astrocytoma. All presented with a new onset epileptic seizure and focal supratentorial cortical lesions.

[Low-grade intracranial fibromyxoid sarcoma: A case report].

The aim of this report is to show the MRI and CT findings for an extra-axial intracranial low-grade fibromyxoid sarcoma. To our knowledge, only three similar cases have been reported to date. We present the case of an 18-year-old woman who presented with a five-month history of hypoacusia, tinnitus, occipital headache, and left facial paresis.

Hyperacute ischemic stroke: middle cerebral artery susceptibility sign at echo-planar gradient-echo MR imaging.

Purpose: To evaluate the accuracy of echo-planar T2*-weighted magnetic resonance (MR) sequences in detection of acute middle cerebral artery (MCA) or internal carotid artery (ICA) thrombotic occlusion.

Materials And Methods: Forty-two consecutive patients with stroke involving the MCA territory underwent MR imaging within 6 hours after clinical onset. MR examination included echo-planar T2*-weighted, diffusion-weighted (DW), and perfusion-weighted (PW) imaging and MR angiography.