Abstract
Purpose
To identify and determine variations on eye distance in patients with bilateral nasal polyposis (BNP) compared to a healthy control group.
Methods
This is a case–control study that included 20 BNP patients and 40 healthy controls. We included all patients with BNP confirmed by pathology and a computed tomography scan. A healthy control group was admitted, filtered by the exclusion criteria of nasal polyposis, craniofacial malformations, and encephalocele. Paranasal sinus CT scans were performed in all participants, and two measures were evaluated, the interoptic (soft tissue) and the interzygomatic (bone structure) distances.
Results
A total of 20 BNP subjects, 13 (65%) male and 7 (35%) female, with a mean age of 38.8 years, and 40 healthy controls, 16 (40%) male and 24 (60%) female with a mean age of 43.2 years, were included. The mean interoptic distance was 69.7 mm (71.9 mm men, 66.4 mm women) and interzygomatic distance was 103.1 mm (104.5 mm men, 100.6 mm women). A significant increase of the interoptic (p < 0.001) and interzygomatic (p < 0.002) measurements was found in patients with polyposis compared to the controls. In the receptor operative curve analysis, the interoptic distance had an area under a curve of 96% and the threshold that maximizes the sensitivity and specificity was 59.85 mm (sensitivity 90%, specificity 95%, PPV 90%, NPV 95%).
Conclusions
An increase in ocular and orbital distances was identified in patients with BNP. Polyposis may be identified by measuring eye separation. The established cut point distance identifies patients that may benefit from follow-up. Further research in this study line is suggested.
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Neither the research, nor the authors received any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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The corresponding author had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. There is no conflict of interest. Neither the research nor the authors received a specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
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The research protocol was approved by the local Research and Ethics Committee with the registry key OT16-00001.
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Treviño-González, J.L., Campos-Coy, M.A., Villegas-González, M.J. et al. Impact of bilateral nasal polyposis on the interoptic and interzygomatic distance. Eur Arch Otorhinolaryngol 276, 1701–1705 (2019). https://doi.org/10.1007/s00405-019-05390-z
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DOI: https://doi.org/10.1007/s00405-019-05390-z