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Atypical Vascularity Within a Schwannoma

A Case Study

James A. Wright Department of Orthopaedic Surgery, Section of Podiatry Lenox Hill Hospital, New York, NY.

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Hariklia Bezhani Department of Orthopaedic Surgery, Section of Podiatry Lenox Hill Hospital, New York, NY.

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Rosanna Troia Department of Orthopaedic Surgery, Section of Podiatry Lenox Hill Hospital, New York, NY.

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Fanni Ratzon Department of Pathology, Lenox Hill Hospital, New York, NY.

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We report on the unusual presentation of a schwannoma. Aside from the aberrant dorsolateral anatomical presentation, ultrasonography revealed not only peripheral vascularity but also internal vascularity. Internal vascularity often suggests a malignant process as opposed to a benign one; however, in the presented case, the diagnosis of a benign lesion was confirmed with S100 immunohistochemical staining. In this study, we review the literature on this pathology and present an uncommon presentation of a benign nerve tumor.

Corresponding author: James A. Wright, MS, DPM, Orthopaedic Surgery, Section of Podiatry, Lenox Hill Hospital, 100 E 77th St, New York, NY 10075. (E-mail: jawright@post.harvard.edu)