This document discusses nasal septum abnormalities including deformities like anterior dislocation, C-shaped, and S-shaped deformities as well as spurs and thickening. Clinical features include nasal obstruction, headaches, sinusitis, and epistaxis. Treatments include submucous resection and septoplasty. Septoplasty involves elevating mucosal flaps on both sides of the septum to remove deviated parts and reposition the septum, while submucous resection removes only the most deviated parts and corrects the septum through plastic means, elevating flaps on just one side. Septoplasty has almost replaced submucous resection.