Angiogenesis in chronic rhinosinusitis with nasal polyps and in antrochoanal polyps

Nir Hirshoren*, Tzahi Neuman, Menachem Gross, Ron Eliashar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Objectives and study design: Angiogenesis may be related to the pathogenesis and prognosis of chronic rhinosinusitis with nasal polyposis. This cross-sectional study, in a tertiary university hospital, evaluates angiogenesis parameters in nasal polyps, antrochoanal polyps and middle turbinates. Subjects: Nasal polyps obtained from 24 consecutive patients, were compared to 10 normal middle turbinates and to 11 antrochoanal polyps. Methods: Analyzing for the expression of the angiogenic marker CD34 by immunohistochemistry. Blood vessels count, vascular surface density and microvessel density were measured by manual and computerized methods. Results: Angiogenesis was significantly higher in nasal polyps compared to control turbinates and to antrochoanal polyps (p = 0.0001 and p = 0.007, respectively). Antrochoanal polyps showed significantly more angiogenesis than normal middle turbinates (p = 0.001). Angiogenesis was not elevated in sub-groups of nasal polyposis patients considered to have worse prognosis. Conclusions: Angiogenesis probably plays a role in the pathogenesis of both nasal polyposis and antrochoanal polyps. However, the significantly higher angiogenesis found in nasal polyps compared to antrochoanal polyps may support a different mechanism of growth. The lack of difference between angiogenesis and nasal polyposis patients sub-groups, may imply that angiogenesis is not associated with the prognosis of chronic rhinosinusitis with nasal polyposis.

Original languageAmerican English
Pages (from-to)321-327
Number of pages7
JournalInflammation Research
Issue number4
StatePublished - Apr 2011


  • Angiogenesis
  • Antrochoanal polyp
  • Asthma
  • CD34
  • Chronic rhinosinusitis
  • Eosinophil
  • Microvessel density
  • Middle turbinate
  • Nasal polyposis
  • Vascular surface density


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