AB084. T2-fluid-attenuated inversion recovery (T2-FLAIR) mismatch as predictive MRI findings of diffuse astrocytoma: a case report

Diffuse astrocytomas are a subtype of astrocytic tumors classified as World Health Organization (WHO) grade II tumors. Magnetic resonance imaging is a useful diagnostic tool for assessing diffuse astrocytomas. However, their growth pattern resembles other low-grade gliomas, such as oligodendroglioma. The potential magnetic resonance imaging (MRI) feature, T2-fluid-attenuated inversion recovery (T2-FLAIR) mismatch, may be predictive in identifying diffuse astrocytomas. This involves a hyperintense signal in T2-weighted and a hypointense signal in T2-FLAIR, which oligodendroglioma does not exhibit.