title: Intravascular papillary endothelial hyperplasia (Masson lesion) of the hypopharynx and larynx.
abstract: Masson lesion is characterized by a benign intravascular papillary hyperplasia and subsequent thrombosis. Clinically, this lesion can be misdiagnosed as mucocele, hemangioma, Kaposi sarcoma, angiosarcoma, pyogenic granuloma, and several other lesions. In this article, we report a case of intravascular papillary endothelial hyperplasia of the hypopharynx and larynx, which caused dysphagia in an 18-year-old female patient. The lesion was excised entirely via a lateral pharyngotomy approach. We discuss the clinical and histopathologic features, differential diagnosis, and treatment of this uncommon entity.
authors.affiliation: Department of Otorhinolaryngology and Head and Neck Surgery, Istanbul University, Cerrahpaşa, Medical Faculty, Istanbul, Turkey. guvencmg@yahoo.com
authors.forename: M Güven
authors.initials: MG
authors.lastname: Güvenç
authors.forename: Levent
authors.initials: L
authors.lastname: Dereköylü
authors.forename: Nazim
authors.initials: N
authors.lastname: Korkut
authors.forename: Ferhan
authors.initials: F
authors.lastname: Oz
authors.forename: Büge
authors.initials: B
authors.lastname: Oz
mesh_terms: D000293:Adolescent; D003680:Deglutition Disorders / Q000175:diagnosis / Q000209:etiology; D003937:Diagnosis, Differential; D004724:Endoscopy / Q000379:methods; D004730:Endothelium, Vascular / Q000473:pathology* / Q000601:surgery; D005260:Female; D006394:Hemangiosarcoma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D006801:Humans; D006965:Hyperplasia / Q000150:complications / Q000473:pathology* / Q000601:surgery; D007012:Hypopharyngeal Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D007822:Laryngeal Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D012720:Severity of Illness Index