title: [Imaging of non-osseous malignant tumors of the anterior skull base. Preoperative evaluation].
abstract: Imaging is fundamental in pre-operative evaluation for cancers of anterior cranial base and ethmoido-sphenoidal region, particularly because clinical examination is poorly contributive and cannot evaluate the tumoral extension. Radiological data are based on CT-scan and MRI. The first goal of radiological evaluation is to recognize the presence of a tumor and to differentiate it from inflammatory lesions, which is not always very easy. The second aim is the evaluation of tumoral extension, particularly towards the intra-cranial cavity and the orbit. It leads to an extension grading which is essential for the choice of a therapeutic strategy (inductive chemotherapy, surgical approach, radiotherapy). The third goal of imaging examination is the evaluation of tumoral response to pre-operative inductive chemotherapy.
authors.affiliation: Service de Neuroradiologie, Centre Hospitalier Sainte-Anne, Paris.
authors.forename: A
authors.initials: A
authors.lastname: Elkeslassy
authors.forename: J F
authors.initials: JF
authors.lastname: Meder
authors.forename: F
authors.initials: F
authors.lastname: Lafitte
authors.forename: K
authors.initials: K
authors.lastname: Rezeai
authors.forename: D
authors.initials: D
authors.lastname: Fredy
mesh_terms: D006801:Humans; D008279:Magnetic Resonance Imaging; D009296:Nasal Cavity; D009367:Neoplasm Staging; D009669:Nose Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed