Sinus mucosal thickening: Meaning in a Radiology Report

Also written as: mucosal thickening, paranasal sinus mucosal disease, mucoperiosteal thickening, sinus disease

Sinus mucosal thickening means the lining of the air-filled sinuses around the nose looks swollen. It is very common on head scans and often harmless.

What it means

The sinuses are air spaces in the bones around the nose and eyes. A thin, moist lining (mucosa) covers their walls. Colds, allergies and infections can irritate it and make it swell. On CT it shows as a gray rim along the sinus walls, and on MRI as a bright rim. Small amounts are seen in many people without any sinus symptoms.

When it matters

Mild thickening seen on a scan done for another reason rarely needs action. Its importance depends on symptoms, such as a blocked nose, facial pain or thick discharge lasting weeks. Doctors look more closely at a fluid level, a flat line of fluid that can go with a sudden infection. One-sided changes that affect the bone also get a closer look. Your doctor may suggest a dedicated sinus CT or a specialist visit.

Questions to ask your doctor

Is this thickening mild, or does it suggest an active sinus infection?
Could it explain my blocked nose or facial pain, or is it incidental?
Would a dedicated sinus CT or a specialist visit help?

General information, not medical advice. What a finding means for you depends on your symptoms, your history and the images themselves, so talk your results through with a doctor.