Abstract
Cellular Schwannoma is a subtype of Schwannoma, characterized by high cellularity, a largely Antoni A pattern, and absence of well-formed Verocay bodies. We report a rare case of cellular Schwannoma arising in the maxillary sinus. A 44-year-old man was referred to our hospital because of a swelling in the left buccal region. A computed tomographic scan showed a low density lesion in the left maxillary sinus. The clinical diagnosis was a maxillary tumor, and enucleation was performed. Histologically, the lesion was mainly composed of spindle cells showing high cellularity. The lesion contained hyalinization, collections of lipid-laden histiocytes, lymphocytic infiltrates, and hemosiderin deposits. Immunohistochemically, the spindle cells were strongly positive for S-100 protein and negative for GFAP, EMA, and Leu-7. Positive reactions for Ki-67 were found in the nuclei of a few tumor cells. The histopathological diagnosis was cellular Schwannoma.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Japanese Journal of Oral and Maxillofacial Surgery
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
