title: Infantile schwannoma of the maxillary sinus.
abstract: A rare case of a 5-year-old female with schwannoma of the maxillary sinus is presented. She had complained of painless swelling of the left cheek and hard palate for a duration of one year. Preoperatively, a CT scan strongly suggested it to be a maxillary cyst with an erupted tooth rather than neoplasm. The tumour was completely removed after embolization of the left internal maxillary artery. The tumour was composed of spindle cells in a palisading pattern and intercellular collagenous fibres. Mitotic figures and atypical nuclei were not observed. Immunohistochemically, the majority of the cells were positive for NSE and S-100 protein, whereas GFA and PCNA showed little immunoreaction. The pathological diagnosis was Antony type A of schwannoma arising in the maxillary sinus.
authors.affiliation: Department of Otolaryngology, Tokyo Women's Medical College, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yoshihara
authors.forename: K
authors.initials: K
authors.lastname: Nagai
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D004621:Embolization, Therapeutic; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008438:Maxillary Artery; D008444:Maxillary Sinus Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D009442:Neurilemmoma / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D013514:Surgical Procedures, Operative / Q000379:methods; D014057:Tomography, X-Ray Computed