title: Primary malignant myoepithelioma of the left maxillary sinus: a case report.
abstract: We describe the case of a 41-year-old woman who presented with a malignant myoepithelioma (MME) in her left maxillary sinus. Exploratory biopsy of the left maxillary sinus was performed and pathological examination demonstrated that the tumour was positive for calponin and cytokeratin 14, which are indicative of MME. Lateral rhinotomy and left total maxillectomy were undertaken and the patient received radiotherapy and chemotherapy post-surgery. Primary recurrence and metastasis to the left angle of the mandible occurred 9 months after the surgery. The patient died of cachexia 13 months after the surgery.
authors.affiliation: Department of Otolaryngology, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, Zhejiang, The People's Republic of China.
authors.forename: S H
authors.initials: SH
authors.lastname: Zhou
authors.forename: L X
authors.initials: LX
authors.lastname: Ruan
authors.forename: L
authors.initials: L
authors.lastname: Gong
authors.forename: S Q
authors.initials: SQ
authors.lastname: Wang
mesh_terms: D000328:Adult; D002135:Calcium-Binding Proteins / Q000032:analysis; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D053547:Keratin-14 / Q000032:analysis; D008444:Maxillary Sinus Neoplasms / Q000737:chemistry / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D008840:Microfilament Proteins / Q000032:analysis; D009208:Myoepithelioma / Q000737:chemistry / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D014057:Tomography, X-Ray Computed; D000096985:Calponins
chemical_list: D002135:Calcium-Binding Proteins; D053547:Keratin-14; D008840:Microfilament Proteins; D000096985:Calponins