There are two of these air cavities in your forehead (frontal sinuses), several between your eyes and behind your nose ...

[1] The osteomeatal complex contains the narrow channels that provide for mucociliary clearance and ventilation of the anterior ethmoid, maxillary, and frontal sinuses. Relatively minor swelling ...

Different RTIs were analysed separately, and this paper focuses on patients with acute sinusitis. Methods, design and patients: This was an open-label, prospective, uncontrolled, post-marketing ...