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Comparative Study
. 2009 Nov-Dec;75(6):814-20.
doi: 10.1016/s1808-8694(15)30542-5.

Reproducibility of the three-dimensional endoscopic staging system for nasal polyposis

Marcelo Castro Alves de Sousa  1 , Helena Maria Gonçalves Becker, Celso Gonçalves Becker, Mariana Moreira de Castro, Nicodemos José Alves de Sousa, Roberto Eustáquio dos Santos Guimarães
Affiliations
Comparative Study

Reproducibility of the three-dimensional endoscopic staging system for nasal polyposis

Marcelo Castro Alves de Sousa et al. Braz J Otorhinolaryngol. 2009 Nov-Dec.

Abstract

Nasal polyposis is a chronic inflammatory process of the nasal mucosa, characterized by multiple and bilateral nasal polyps. Different drugs have been used in its treatment. In order to study the results of different treatment modalities it is necessary to have some kind of staging.

Aim: to present a new endoscopic staging method, based on nasal endoscopy and on the three-dimensional nasal polyp assessment; and compare its reproducibility with that from two other systems already established in the literature.

Study design: Cohort study.

Material and methods: Three experts assessed the exams of 20 patients with nasal polyposis at different times, before, at 15 and at 30 days after the start of oral prednisone, 1 mg/kg/day, during 7 days. We assessed the agreement rate among the experts, using Kappa for statistic analysis.

Results: The three methods were reproducible, and the method hereby proposed had the least agreement among the examiners.

Conclusions: the three-dimensional staging system proposed proved reproducible, despite showing less agreement among the examiners than the other as the other two methods.

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Figures

Figure 1
Figure 1
NP staging in the horizontal plane - H1 - polyps restricted to the middle meatus. H2 - Polyps getting out of the middle meatus without touching the septum
Figure 2
Figure 2
NP staging in the horizontal plane - H0 - No polyps. HT -Polyps extending beyond the middle meatus and touching the septum
Figure 3
Figure 3
NP staging in the vertical plane - V1 - Polyps in the middle meatus only. VS - Polyps extending superiorly to the middle meatus
Figure 4
Figure 4
NP staging in the vertical plane - VI - Polyps extending inferiorly to the middle meatus. VT - Polyps occupying the entire vertical aspect of the nasal cavity
Figure 5
Figure 5
NP staging in the antero-posterior plane - P1 - Polyps in the middle meatus region only
Figure 6
Figure 6
NP staging in the antero-posterior plane - PP - Polyps extending posterior to the middle meatus
Figure 7
Figure 7
NP staging in the antero-posterior plane - PT - Polyps occupying the entire antero-posterior aspect of the nasal cavity
Figure 8
Figure 8
NP staging in the antero-posterior plane - PA - Polyps extending anteriorly to the middle meatus
See this image and copyright information in PMC

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Uncited Reference

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