What diagnostic tool is commonly used to visualize the nasal cavity and sinuses?

The flexible endoscope is a commonly used diagnostic tool for visualizing the nasal cavity and sinuses due to its ability to provide direct visualization of these areas. This instrument features a thin, flexible tube equipped with a camera and light at the end, allowing for detailed observation of the internal structures of the nasal passages and sinuses.

One of the key advantages of using a flexible endoscope is that it enables the physician to not only see the anatomy clearly but also to evaluate any abnormalities such as inflammation, polyps, or structural issues in real-time. This tool is also useful for performing diagnostic procedures like nasal biopsies or suctioning secretions.

While other imaging modalities such as CT scans, ultrasounds, and MRIs are useful in certain contexts, they do not provide the same level of direct visualization as a flexible endoscope. CT scans are excellent for detailed imaging of the sinuses and can show bony structures and chronic sinus issues, but they do not provide live images. Ultrasound is not typically used for nasal cavity visualization due to its limitations in imaging complex bony structures. MRI can offer detailed images of soft tissues but is not commonly employed for routine nasal examination and assessment.

Overall, the flexible endoscope stands out for its ability to provide