The patient went on to have a resection.
MICROSCOPIC DESCRIPTION :The sections show cerebral tissue containing a diffusely infiltrating moderately cellular tumour, with scattered areas of necrosis. There is associated microvascular proliferation, with thrombosed vessels evident. The tumour cells are generally elongate, with inapparent cytoplasmic outlines and associated with eosinophilic glial processes. Nuclei are oval or elongate, generally with hyperchromatic chromatin and frequent mitotic figures seen. Tumour cells show variable perineuronal satellitosis. No oligodendroglial component is recognised.
FINAL DIAGNOSIS: Astrocytoma, WHO grade 4 (glioblastoma).
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