Diagnosis of chronic sinusitis may be extremely difficult because patients commonly have vague symptoms. Unless sinusitis is suspected as a possible cause of symptoms, it may go undiagnosed. As a ...

How reliable is a CT scan of the sinuses in a patient who does not respond to an initial extended course of antimicrobial treatment for sinusitis? — Lisa Gordon, PA-C, New Port Richey, Fla. There is ...

For certain medical conditions, X-ray or ultrasound images don’t provide enough information. A CT scan provides a more detailed view of tissues, blood vessels, and bones. Doctors and other medical ...