A CT scan uses a computer linked to an X-ray machine to look at cross-sectional images of your sinuses. Typically your doctor only uses this if they’re unclear about your diagnosis after endoscopy.

Nasal polyps appear as translucent, grapelike, yellow or gray masses. Sometimes the doctor will use a computed tomography (CT) scan to determine the location and size of the polyps.

The study involved 94 patients (median age, 49.5 years; 58.5% men) with CRSwNP who had endoscopic sinus surgery (ESS) with nasal polyp collection at Northwestern Memorial Hospital between 2012 and ...

Brescia G, Contro G, Ruaro A, Frigo AC, Barion U, Marioni G. Preoperative sinonasal computed tomography score in chronic rhinosinusitis with nasal polyps. Tomography. 2022;8 (1):77-88. doi:10.3390 ...

He had his seventh nasal polyp operation in 2021. “My lower sinuses were fine, but I had polyps growing in my upper sinuses which (doctors) could only pick up with a CAT scan,” he says.