Abstract:

Objective   To investigate the clinical classification of NIP and to show how to use this classification in planning surgery and evaluating results. Method   a retrospective study with fifty cases of NIP patients. The lesions were classified into type I (30 cases), originating from the nasal septum or lateral nasal wall (LNW), and type II (25 cases), originating from the maxillary sinus.  Results   We performed with conservative transnasal endoscopic excision (30 cases) in Type I and with performed conservative transnasal endoscopic excision (4 cases), radical transnasal endoscopic medial maxillectomy (11 cases), combined approach (10 cases). In Type I recurrence was 6.7％(2/30).and 16.0％(4/25) in Type Ⅱ, 10.9％(6/55) in all cases. The recurrence of all cases were compared to the reported, The difference was not statistically significant. Conclusion    We performed with conservative transnasal endoscopic excision in Type I and with performed radical transnasal endoscopic medial maxillectomy and combined approach in Type Ⅱ. The difference was not statistically significant in the recurrence when compared to the reported. So, it proves that this Kamel′s classification has a role in planning surgery and evaluating results, and transnasal endoscopic excision of NIP is a good choice.

Key words: Nasal inverted papilloma； Classification system； Endoscopic surgical procedures, operative