Oligodendroglioma in an 81-year-old man. A, Axial CT image shows a calcified left frontal lobe mass (white arrowhead). B, Axial T2-weighted image demonstrates heterogeneous T2 signal reflecting the presence of calcifications and some surrounding edema. C, Postcontrast coronal Tl -weighted image shows mild enhancement (long white arrow). Statistically, a calcified mass is still more likely to represent low-grade astrocytoma. (Click to magnify figure)
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