A CT scan of the paranasal sinuses is a specialised X‑ray that produces detailed cross‑sectional images of the air‑filled sinuses around the nose. It helps diagnose sinusitis, anatomical variations, polyps, tumours or fractures, and guides surgical planning. The procedure is quick, painless and uses low‑dose radiation; contrast dye is rarely required.

Costs vary widely. In India a CT paranasal sinuses typically costs about ₹1,000–₹6,000 privately. In the UK it’s free on the NHS; private scans run roughly £150–£500. In the US out-of-pocket prices range about $300–$3,000 depending on facility, use of contrast and insurance. Actual price depends on location, facility type and whether reporting/contrast are included.

Paranasal sinus conditions (like sinusitis) are usually mild and self-limiting, treated with rest, nasal care, and sometimes medications. However, they can become serious if infection spreads to the eyes or brain, causing orbital cellulitis, meningitis, or abscess — or when symptoms persist for months (chronic sinusitis) and reduce quality of life. Seek urgent care for high fever, vision changes, severe headache, facial swelling, or neurological signs.

A CT PNS scan provides detailed cross‑sectional images of the paranasal sinuses and surrounding bone. It helps diagnose acute or chronic sinusitis, mucosal thickening, polyps, obstructions, fractures, and tumors, and identifies complications such as orbital or intracranial spread. It’s commonly used to assess sinus anatomy and disease extent to guide medical management or surgical planning.

An ENT orders a sinus CT to evaluate chronic or recurrent sinusitis, define anatomy and blockages, detect polyps, masses, bony damage or fractures, and identify complications (orbital or intracranial spread). It’s used for pre‑operative planning and to guide endoscopic sinus surgery when symptoms persist despite medical treatment or when imaging is needed to rule out alternative diagnoses.

Symptoms of a sinus tumor can include persistent unilateral nasal blockage or discharge (often bloody), recurrent sinus infections, facial pain, pressure or swelling, reduced or lost sense of smell, dental pain or numbness, headaches, ear fullness, vision changes (double or blurred vision), unexplained weight loss, fatigue, and palpable neck lumps. New, severe, or progressive symptoms need prompt medical evaluation.