Korean J Otorhinolaryngol-Head Neck Surg.  2010 Jun;53(6):344-348. 10.3342/kjorl-hns.2010.53.6.344.

Distribution of Histologic Type of Nasal Polyp and Expression of Vascular Endothelial Growth Factor According to Nasal Polyp Type

Affiliations
  • 1Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Inje University, Busan, Korea. sinus4@paik.ac.kr
  • 2Department of Pathology, College of Medicine, Inje University, Busan, Korea.

Abstract

BACKGROUND AND OBJECTIVES
To determine the frequency of the histologic types of nasal polyp in Korea and their relationships with respect to age, laterality, asthma, allergic rhinitis (AR) and expression of vascular endothelial growth factor (VEGF).
SUBJECTS AND METHOD
Tissue slides obtained from 282 patients with nasal polyps were examined; polyps were classified either as eosinophilic polyp or chronic inflammatory polyp. VEGF expression was determined using immunohistochemical staining.
RESULTS
Of the 282 subjects, 169 (59.9%) had chronic inflammatory polyps, 113 (40.1%) had eosinophilic polyps, and 232 (82.3%) had bilateral polyps. Twenty-two subjects (7.8%) had asthma and 23 (8.2%) had AR. There was no statistical relationship between nasal polyp type and laterality or the presence of asthma or AR. Of 10 children, 9 (90%) had chronic inflammatory polyps. VEGF expression was significantly higher in eosinophilic polyps than in chronic inflammatory polyps, and significantly higher in the samples of each polyp type from the subjects with AR than those without AR. In subjects with asthma, however, the VEGF expression did not differ between eosinophilic polyps and chronic inflammatory polyp samples.
CONCLUSION
In the Korean population, chronic inflammatory nasal polyps are more common than eosinophilic nasal polyps. VEGF expression was the highest in eosinophilic polyps of the subjects with AR, suggesting that VEGF might contribute to the polyp formation via local allergic action.

Keyword

Nasal polyp; Pathology; Vascular endothelial growth factor; Inflammation; Allergy

MeSH Terms

Asthma
Child
Eosinophils
Humans
Hypersensitivity
Inflammation
Korea
Nasal Polyps
Polyps
Rhinitis
Rhinitis, Allergic, Perennial
Vascular Endothelial Growth Factor A
Vascular Endothelial Growth Factor A
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