[2 cases of adenocarcinoma of nasal cavities and paranasal sinuses].

Malignant tumors of the paranasal sinuses are relatively rare. Generally squamous cell carcinoma appear to be dominant. Adenocarcinoma make up 12 to 15 percent of all nasal and paranasal sinus malignancies. Adenocarcinomas are most often seen in the middle turbinate and ethmoid sinus. We report 2 cases and discuss its clinical findings, the treatment and possible etiologies.