These authors contributed equally to the work of this article.
Predicting the early invasiveness of nasopharyngeal mucosal neoplasia after radiotherapy by narrow-band imaging: A pilot study
Article first published online: 7 APR 2012
Copyright © 2012 Wiley Periodicals, Inc.
Head & Neck
Volume 35, Issue 1, pages 46–51, January 2013
How to Cite
Lin, Y.-C., Wang, W.-H., Tsai, W.-C., Chen, C.-C., Chen, W.-C. and Lee, K.-F. (2013), Predicting the early invasiveness of nasopharyngeal mucosal neoplasia after radiotherapy by narrow-band imaging: A pilot study. Head Neck, 35: 46–51. doi: 10.1002/hed.22912
- Issue published online: 15 DEC 2012
- Article first published online: 7 APR 2012
- Manuscript Accepted: 1 NOV 2011
- nasopharyngeal carcinoma;
- narrow-band imaging;
This study evaluated the correlation between the histologic findings of nasopharyngeal mucosal neoplasias after radiotherapy and narrow-band imaging (NBI) endoscopic findings.
One hundred six patients were enrolled. All patients underwent conventional white-light endoscopic examinations of the nasopharynx, which were followed by NBI endoscopy. Biopsy specimens were obtained if scattered brown-spotted lesions were identified.
We identified 22 patients with brown-spotted lesions by NBI endoscopy. Histopathologic study confirmed that 4 lesions were neoplastic, including 2 dysplastic lesions and 2 carcinomatous lesions. According to pathologic examinations, the thickness of the epithelium in carcinomatous, dysplastic, and nonneoplastic lesions were (mean ± SD) 0.85 ± 0.21 mm, 0.45 ± 0.21 mm, and 0.35 ± 0.07 mm, respectively. The epithelial thickness of carcinomatous and dysplastic lesions was significantly thicker than that of nonneoplastic lesions (p < .001 and p = .026, respectively). According to the NBI endoscopic examinations, the epithelial thickness of the brown-spotted lesions with irregular borders was significantly thicker than those lesions with tailed/round borders (0.48 ± 0.24 mm vs 0.26 ± 0.07 mm, p = .009). Visualization by NBI corresponded to the histopathologic findings; the prevalence of neoplastic lesions with tailed/round borders and irregular borders was 0% (0/13) and 44.4% (4/9), respectively (p = .017).
This study demonstrates that lesions with an irregular pattern tend to be neoplastic lesions. Irregularities observed under NBI are important pathologic indicators of the early invasiveness of nasopharyngeal mucosal neoplasia after radiotherapy. This result warrants further inquiry to confirm its accuracy. © 2012 Wiley Periodicals, Inc. Head Neck, 2013