A deviated nasal septum does not lead to cancerous changes in patients. It's a condition involving a bony deviation and is a common and frequent disorder in the field of otolaryngology. Generally, a deviated nasal septum occurs due to abnormal development of the nasal septum during the embryonic stage or from subsequent trauma to the nasal septum or tumors in the nasal cavity, causing local pressure and deviation to one or both sides of the septum. Following a septal deviation, patients may experience persistent nasal congestion, accompanied by nasal discharge, facial pain, and headaches. A deviated nasal septum can also trigger the occurrence of nasal polyps and sinusitis, but it does not lead to local cancerous changes. If a patient's symptoms are mild, special treatment is generally unnecessary. However, if clinical symptoms appear, corrective surgery for the deviated nasal septum can completely cure the condition.