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Heterogeneous enhancing mass with central non-enhancement involves both white matter and cortex and extends towards the ventricle.
The patient went on to have a resection.
Sections show the specimen to consist predominantly of necrotic tissue, in areas containing viable glioma that is high grade. The tumour cells display small cell morphologic characteristics, possible oligodendroglial features, and astrocytic elements with a fibrillar appearance. Mitotic figures are identified. Vascular proliferation is observed, including glomeruloid aggregates proliferating capillaries. As previously mentioned, tumour necrosis is extensive. Abnormally large ectatic vascular structures are also seen and are consistent with a vascular malformation. Several vessels are thrombosed.
Final Diagnosis: Glioblastoma WHO Grade IV