Abstract:

Objective　To explore the difference in the mirror image of nasopharyngeal structures observed using nasal endoscopy in various angles (0 °、30 °、 70 ° mirror) and to analyze  the advantages and disadvantages of the various lens application.　Methods　70 patients with nasopharyngeal carcinoma treated by radiotherapy and with regular follow-up from June, 2012 to August, 2013  in our department were involved. Clinical data about the mirror image of the nasopharyngeal structures observed using nasal endoscopy in various degrees were retrospectively analyzed.　Results　the mirror image of the nasopharyngeal structures observed using nasal endoscopy in various degrees were statistically different, and the visual fields of nasal endoscopy under various angles were statistically different (P<0.05) , with statistical significance (P<0.05).　Conclusions　Endoscopic imaging using nasal endoscopy with different angles in patients with nasopharyngeal carcinoma after radiotherapy can result in different mirror image,  which has its respective advantages and disadvantages. The outcomes of this study  can be used for reference for the selection of lens.

Key words: Nasopharyngeal carcinoma, Nasal endoscopy, Radiotherapy