Keywords: Sphenoid sinus, nasal polyps

Abstract: The authors present a case of leftsphenoid sin us solitary polype with nasophatynx extensãn. The patient was a 18 years old white female who showed a prggresive obstruction in the ipsilateral nostril and difficulty in deglution. The case was studied by computed tomography and magnetic resonance anda transphenoidal microsurgety was performed. The tumor was fully removed. This is an important study for its particular it´s sand because it´s notso common. It is also important for the differencial diagnoses when compared with other local pathologies.