• Bayard R Wilson, Jeffrey A Steinberg, Vivian Snyder, Michael N Jiang, and Bob S Carter.
• School of Medicine, University of California at San Diego, San Diego, California, USA.
• World Neurosurg. 2016 Aug 1; 92: 582.e9-582.e13.

BackgroundThe phenomenon of intracerebral schwannoma is exceedingly rare, and its etiology still a matter of debate. No documented cases of intracerebral schwannoma containing vascular elements consistent with those of an arteriovenous malformation (AVM) have been reported. We describe such a case here.Case DescriptionA left temporal intraparenchymal lesion was discovered incidentally in a 34-year-old man after he suffered a mild trauma. The lesion was resected and found on histologic examination to be an intracerebral schwannoma with AVM-like vasculature. The patient made a full recovery after resection.ConclusionsTo our knowledge, this is the first case of an intracerebral schwannoma with AVM-like characteristics to be reported in the literature. We hypothesize that the co-occurrence of this rare pathologic entity is caused by an interrelated etiologic process, with the tumor microenvironment of the schwannoma inciting the development of the vascular malformation.Copyright © 2016 Elsevier Inc. All rights reserved.

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