title: [Unusual localization of an olfactory esthesioneuroma].
abstract: Olfactory neuroblastoma, a nerve tumour arising in the olfactory mucosa, is a relatively easy diagnosis in the case of a mass centered around the cribriform plate. It is more difficult to diagnose in its exceptional ectopic forms (maxillary sinus) in the absence of any cytological and histochemical arguments (fibrils, olfactory rosettes). Its local malignancy is variable with a 42% 5-year survival for stage C and metastases in 30% of cases (principally cervical nodes, bone and liver). The role of imaging is to define the criteria of a mass syndrome and to perform the preoperative staging in a case of apparently simple sinus obstruction.
authors.affiliation: Service de Radiologie, Hôpital Saint-Antoine, Paris.
authors.forename: M
authors.initials: M
authors.lastname: Jugie
authors.forename: K
authors.initials: K
authors.lastname: Marsot-Dupuch
authors.forename: F
authors.initials: F
authors.lastname: Chabolle
authors.forename: V
authors.initials: V
authors.lastname: Raveau
authors.forename: C
authors.initials: C
authors.lastname: Levy
authors.forename: C
authors.initials: C
authors.lastname: Brocheriou
authors.forename: J M
authors.initials: JM
authors.lastname: Tubiana
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008444:Maxillary Sinus Neoplasms / Q000175:diagnosis*; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D018241:Neuroectodermal Tumors, Primitive, Peripheral / Q000175:diagnosis* / Q000473:pathology; D009831:Olfactory Mucosa; D014057:Tomography, X-Ray Computed
vernacular_title: Localisation exceptionnelle d'un esthésioneurome olfactif.