Nasal polyps are benign (meaning noncancerous), Dr. Kelley notes. That said, some nasal masses that carry the risk of developing into malignant tumors could be mistaken for polyps. So getting examined ...

The paranasal sinuses are air-filled spaces surrounded by bone, located close to nerves ... Nasopharyngeal cancer slowly blocking sinus drainage: Growing at the back of the nasal cavity, this cancer ...

Chronic sinusitis is often a benign condition, but it should not be taken lightly when it becomes persistent or atypical ...