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Clinical Report

Cerebellar Pilocytic Astrocytoma, WHO Grade I

Dr. Jeffrey Leonard, Department of Neurosurgery
Washington University School of Medicine
Children’s Hospital, St Louis, Missouri

PATIENT INFO: 20 year old female presented coincidently following a CT scan for other reasons

SUMMARY: This patient presented with an incidentally discovered posterior fossa tumor located in the left cereballar peduncle measuring 2.0 cm x 2.0 cm. Following initial resection, an intraoperative MRI was performed which showed a small residual nodule of tumor. The decision was then made to continue the procedure to remove the additional tissue.

In this case, intraoperative MR images accurately identifed an area of esidual tumor and then guided the additional resection.