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Anterior (A) and lateral (B) views of the paranasal sinuses. C. Coronal section of the skull revealing the cranial, orbital, and nasal cavities and their relationships to the paranasal sinuses


Anatomy of the paranasal sinuses; drawing shows front and side views of the frontal sinus, ethmoid sinus, maxillary sinus, and sphenoid sinus. The nasal cavity and pharynx (throat) are also shown.

from Harvard Health

What to do about sinusitis

Sinusitis occurs when blocked sinuses cannot drain and the backed-up mucus gets infected. The simplest and often most effective treatment is daily nasal irrigation. It can also help to drink a lot of water, inhale steam, and sleep with the head eleva...


Another endgames quiz for you to puzzle over: can you say what the structures labelled A, B, C, D, E, and F are in this coronal computed tomogram through the paranasal sinuses?


NASAL CANCER - Nasal cancer death rates have fallen by around a fifth in the last 30 years in the UK. Between 80 and 90 out of every 100 people diagnosed with cancer of the nose will have a blockage. Nosebleeds are also a common symptom. The earlier a cancer is picked up, the easier it is to treat it and the more likely the treatment is to be successful. So it is important that you go to your GP as soon as possible if you notice worrying symptoms.