Each nostril leads to a nasal cavity. In this part of your nose, breathed-in air is filtered by cilia — hair-like structures inside the nostrils — before entering your lungs.

The nasal cavity divides into two passages, allowing air to move freely through the nose to breathe. Excess mucus or anatomical issues may make it difficult to breathe through the nose.

Empty nose syndrome is an uncommon and complex problem. The term "empty nose" explains the empty space inside your nasal cavity after surgery. Often, you'll slowly lose nasal tissue called mucosa.

Nasal cancer, also known as nasal cavity cancer or paranasal sinus cancer, can include many types of cancerous tumors. The specific type of nasal cancer largely determines how quickly it is likely ...