If there is no problem with nasaloscopy, is there any possibility of getting a tumor?

Rhinoscopy is divided into anterior rhinoscopy, nasopharyngoscope, nasal speculum, various rhinoscopes have their own advantages and limitations, nasal speculum is currently the most advanced nasal examination equipment, but it is still not able to comprehensively examine all parts of the nasal cavity. Such as paranasal sinuses (frontal sinus, sieve sinus, maxillary sinus, disk sinus) is the dead end. Therefore, the nasal cavity mirror inspection is not a problem, does not mean that you can rest easy. Sometimes you have to use other tests to improve the diagnosis, such as CT, nuclear magnetic **** vibration (soft tissue imaging is better than CT) and other means.