Abstract
Clinical and radiologic follow-up of 86 patients with symptomatic, but surgically inaccessible, cerebral arteriovenous malformations treated with stereotactic heavy charged particle Bragg-peak radiation is reported from the Divisions of Neurosurgery and Neuradiology, Stanford University School of Medicine, California and the Lawrence Berkeley Laboratory, University of California.
Highlights
Six patients with histologically proven epidermoid tumors are reported frcm the neurosurgical service, Brigham and Women's Hospital and Children's Hospital, Harvard Medical School, Boston, Mass
The IVRI allows the distinction of an epidermoid frcm an arachnoid cyst
Ihe MRI or CT is not diagnostic but the MRI is more likely to elucidate the extra axial-nature of the tunor and is preferred
Summary
Six patients with histologically proven epidermoid tumors are reported frcm the neurosurgical service, Brigham and Women's Hospital and Children's Hospital, Harvard Medical School, Boston, Mass. All patients were adults between 22 and 52 years of age at the time of diagnosis. None had synptcms related to the tunor in childhood; one had been treated for bulimia for 17 years and another had meningitis at ten years of age. IVRI showed an irregularly, but sharply marginated, mass with homogeneous density, variable enhancement with gadoliniun, lack of edema in adjacent normal structures, extensive insinuation into cisternal and other cerebrospinal fluid spaces and a high signal intensity on proton-weighted images.
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