title: A case of pleomorphic adenoma of the nasal septum.
abstract: We report a rare case of pleomorphic adenoma arising from the nasal septum. A 32-year-old woman presented with a 3-week-history of left-sided nasal obstruction. Computed tomographic scans revealed an oval mass, measuring about 30 mm in its greatest dimension, in the left anterior nasal cavity. The tumor arose from the anterior part of the nasal septum, and was removed endoscopically with endonasal approach. The microscopic finding showed a lobular and duct-like structures consisting of a loose chondromyxoid stroma. This lesion had histological characteristics of a pleomorphic adenoma, and this was confirmed by immunohistochemical expression of cytokeratin and S-100 protein. Her post-operative course was uneventful, and she is currently free from the disease 8 months after surgery. Diagnosis, clinical behavior and treatment of pleomorphic adenoma of the nasal septum are reviewed from perusal of the literature.
authors.affiliation: Department of Otolaryngology, Kawaguchi Municipal Medical Center, Kawaguchi 333-0833, Japan. masakikumagai@yahoo.co.jp
authors.forename: Masaki
authors.initials: M
authors.lastname: Kumagai
authors.forename: Sohei
authors.initials: S
authors.lastname: Endo
authors.forename: Fumisada
authors.initials: F
authors.lastname: Koizumi
authors.forename: Akinori
authors.initials: A
authors.lastname: Kida
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yamamoto
mesh_terms: D008949:Adenoma, Pleomorphic / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D000328:Adult; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007633:Keratins / Q000378:metabolism; D009300:Nasal Septum / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D009669:Nose Neoplasms / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed
chemical_list: D007633:Keratins