Diagnosis of Paranasal Sinus Tumors
A doctor will typically take your health history and do a physical exam. The physical exam will include looking at your eyes, ears, nose, mouth, face, neck, and throat. Any details you can provide about any pain you are having can help with the diagnosis. This includes details such as whether the pain is sharp, burning, dull, or achy, where it's located, and when it occurs.

Your doctor might order an endoscopy of your sinuses. This is a procedure in which a thin tube with a tiny light and a video camera on the end is inserted into your sinuses. Looking inside your sinuses will help your doctor figure out the location and size of the tumor.

Your doctor might order these tests, as well:

Blood tests

Imaging tests of your skull, such as X-rays, CT scans, or MRI of the sinuses

Imaging tests of your chest

A biopsy, where a small tissue sample from the tumor is removed and checked in a lab for signs of cancer