BSIP, CAVALLINI JAMES / SCIENCE PHOTO LIBRARY BSIP, CAVALLINI JAMES / SCIENCE PHOTO LIBRARY
Sinusitis. Coloured computed tomography (CT) scan of an axial (horizontal) section through the head of a patient with sinusitis. Sinusitis is an inflammation of the sinuses, or air spaces (white, upper centre), located between and beneath the eyes in the facial bones. It is usually due to a bacterial infection. The sinuses lighten the skull and add resonance to the voice. Their linings sec- rete mucus, which normally drains out through the nose. The sinuses at left (in red rectangle) are filled with mucus (blue) due to a blockage caused by the inflammation. Sinusitis can cause headaches and soreness. It may be treated with antibiotics.
Model release not required. Property release not required.