The Importance of 3d Endoscopy in the Sinonasal Malignant Neoplasms

INTRODUCTION The sinonasal malignant tumors are rare, representing less than 3% of the cervicofacialneoplasma and 0.8% of all human cancers. Approximately 55% have their origin in the maxillary sinuses, 35% in the nasal cavity, 9% in the ethmoid sinuses and 1% in the frontal and sphenoid sinuses. The malignant sinonasal tumors affect less than 1 person out of 100,000 individuals per year in most countries. With the exception of non-epithelial tumors, the sinonasal cancer represents a disease that affects grown-up persons, with an increased occurrence among men older than 50 (in their sixties and seventies). Excluding the occupational factors, the males-females rate is of around 2:1.