Isocitrate dehydrogenase mutant gliomas generally have a better prognosis than their
wild-type counterpart. Recurrences are generally within the radiation field in the
primary tumoral bed. Remote recurrence is uncommon and is usually intraparenchymal.
Transformation to a higher grade has been observed with TP53 mutants. Presentation
of glioma as an extra-axial lesion is extremely uncommon. No such cases of remote
intracranial extra-axial recurrence have been reported in the literature. We describe
the unique imaging findings in this case and attempt to formulate possible diagnoses.
Intraoperative and pathological findings confirmed this unusual recurrence pattern.
Keywords
extra-axial - extracranial - recurrence - IDH mutant - glioma - metastases - astrocytoma
