Tumeur triton ethmoido-nasale

MTT of the sinonasal tract is a rare disease that clinicians should be aware of and that must be included in the differential diagnosis of malignant lesions involving the sinonasal tract. Most of the reported cases involving localizations other than the ethmoidonasal cavities, are associated with von Recklinhausen neurofibromatosis and occurr in young subjects (mean age 35 years). There have however been sporadic cases, mainly in older women or after radiotherapy. The prognosis is somewhat better for ethmoidonasal localizations.