The function of the paranasal sinuses is not clear, but theories include humidification and warming of inspired air, lightening of the skull, improvement of vocal resonance, absorption of shock to the ...

Sinuses are air-filled sacs (empty spaces) on either side of the nasal cavity that filter and clean the air breathed through the nose and lighten the bones of the skull. There are four paired sinuses ...

Endoscopic sinus surgery (ESS) has become the cornerstone of contemporary management for chronic sinonasal disorders, leveraging detailed endonasal anatomy and minimally invasive techniques to address ...

The sinuses are four hollow spaces on both sides of your face and head. They're connected by narrow channels that allow air and fluids to flow between your nose and throat. If you have inflammation in ...

The sigmoid sinus is a dural venous sinus that lies deep within the human head, and just below the brain. A dural sinus is a channel that lies between the dura mater, the outermost tissue covering the ...

Your sinuses are air-filled spaces inside your forehead, cheekbones, and behind the bridge of your nose. When inflamed — usually because of an allergic reaction or an infection — they swell, make more ...

Melissa Fiorenza is a writer with over 15 years of experience covering topics in health and fitness, parenting, beauty, and women's issues. Her work appears in publications including Health, ...