Cellula r schwannomas are a benign variant of classic schwannomas. Their histologic appearance closely mimics that of malignant periph eral nerve-sheath tumors, which are high-grade sarcomas. In this article, we describe what to our knowledge is the fi rst reported case of a cellular schwannoma ofthe paranasal sinuses and only the 33'dreported case of any schwannoma at this site. We also discuss the histology and management of cellular schwannomas and review the pertinent literature.
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