Interventricular low-grade oligodendroglioma with multiple parenchymal relapse.

Area of Science:

• Neuro-oncology
• Neuropathology

Background:

• Oligodendrogliomas are glial tumors that originate from oligodendrocytes.
• While anaplastic oligodendrogliomas can disseminate within the central nervous system, low-grade variants typically have a more localized course.

Observation:

• This report describes a rare case of intracranial relapse in a patient with a previously diagnosed low-grade oligodendroglioma.
• The patient, a 37-year-old male, presented with multiple parenchymal masses 18 months after initial diagnosis.

Findings:

• The case highlights an unusual pattern of recurrence for a grade II oligodendroglioma, characterized by multiple intraparenchymal lesions.
• This presentation deviates from the typical behavior of low-grade oligodendrogliomas, which are less commonly associated with intracranial relapse.

Implications:

• This case underscores the importance of considering diverse relapse patterns even in low-grade gliomas.
• Further research into the biological factors influencing oligodendroglioma recurrence may be warranted.
• Such findings can inform surveillance strategies and treatment decisions for patients with oligodendroglioma.