The purpose of the plastic of the nasal septum  to align the nasal septum and move it to its correct position in the nasal cavity. Often septoplasty is part of rhinoplasty. 

with chronic tonsillitis, hypertrophy of the tonsils.

this is an operation aimed at restoring the shape of the outer nose after injury (fracture of the nasal bones). This operation does not belong to the category of plastic and  has nothing to do with septoplasty and rhinoplasty.

An effective method of treatment of vasomotor, hypertrophic rhinitis, as well as drug-induced rhinitis.

Surgical removal of adenoid vegetations in the nose by endoscopic control. 

Endoscopic removal of polyps in the nasal cavity.