The purpose of this study is to recognize with nasal endoscopy the presence of vomeronasalorgan before any surgical procedure of septoplasty Ludvig Jacobson published a scientific work in Danish in 1813, entitled "Anatomical description of a new organ in the nose of domesticated animals" but Kolliker can be considered the discoverer of the vomeronasal organ in humans. Potiquet described in 1891 the possibility of locating and identifying the Jacobson channel in the living man and hypothesized its possible role in the pathogenesis of some nasal septum lesions. The importance of this anatomical structure in nasal pathology and nasal surgery justifies its preoperative systematic research in order to carry out a conservative and respectful surgery.