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Fig. 3 | Egyptian Journal of Neurosurgery

Fig. 3

From: High-grade glioma and solitary metastasis: differentiation by spectroscopy and advanced magnetic resonance techniques

Fig. 3

A 68-year-old male patient with a brain tumor in the right parietal region confirmed histologically as a grade IV astrocytic tumor (astrocytoma). A and B axial MR image in T1 sequence with contrast. A heterogeneous lesion with irregular ring-shaped enhancement and central necrosis can be seen. Perilesional edema is noted in the form of hypodensity in T1 sequence (vasogenic edema and tumor infiltration); C spectroscopy of the tumor area with elevated lipids and lactates in addition to a generalized decrease in the rest of the metabolites; typical of areas with necrosis and ischemia; D: spectroscopy of the peritumoral area with a characteristic pattern of increased Cho and Cr together with decreased NAA

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