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Clinical Report

Grade III Oligodendroglioma

Dr. Ralph Dacey, Chairman, Department of Neurosurgery
Washington University School of Medicine
Barnes Jewish Hospital, St Louis, Missouri

PATIENT INFO: 24 year-old female

SUMMARY: This case was a craniotomy and resection of a right medial posterior frontal Grade III oligodendroglioma. After the primary motor area was identified and mapped, the tumor was resected with the assistance of surgical navigation. Afterwards an intraoperative MR scan was performed which when compared to the preoperative MRI revealed persistent FLAIR abnormality in the anterior margin of the resection bed, and in the posterior margin immediately anterior to the precentral gyrus. Further resection was then performed in these areas.

In this case, intraoperative MR imaging assisted in guiding the decision to perform additional resection.