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Illustrative case No. 16 (Diffuse fluorescence type). Oligodendroglioma WHO Grade II of the right frontal lobe. (A)–Preoperative FLAIR images show a large hyperintense lesion, (B)–White light microscopy shows distint cortical abnormalities; (C)–The tumor reveals moderate fluorescence with violet-blue excitation light; (D)–Histology reveals tumor tissue of a oligodenroglioma WHO grade II. Informed consent has been obtained from the patient for the publication of data, including images.
