J Korean Soc Laryngol Phoniatr Logoped.  2018 Dec;29(2):98-102. 10.0000/jkslpl.2018.29.2.98.

The Value of I-Scan Image-Enhanced Endoscopy in the Diagnosis of Vocal Cord Leukoplakia

• Lee YC
• Eun YG
• Park IS

• KMID: 2437329
• DOI: http://doi.org/10.0000/jkslpl.2018.29.2.98

Abstract

BACKGROUND AND OBJECTIVES
Detection of vascular abnormalities in vocal cord (VC) leukoplakia is important for the diagnosis of neoplastic change of the mucosa. The aim of this study was to investigate the value of i-scan in the differential diagnosis of VC leukoplakia based on visualization of abnormal vascular features.
MATERIALS AND METHODS
Fifty-two patients with leukoplakia were enrolled in the study. Images of their larynx obtained using conventional white light endoscopy and an i-scan-enhanced endoscopy (Pentax DEFINA EPK-3000 Video Processors, with Pentax VNLJ10) were reviewed. The microvascular features of the lesions and vascular changes were analyzed and the results were compared with the histopathologic diagnosis.
RESULTS
Among the 52 leukoplakia patients, 7 (13.5%) patients had squamous hyperplasia, 10 (19.3%) mild dysplasia, 2 (3.8%) moderate dysplasia, 14 (26.9%) severe dysplasia, 4 (7.7%) carcinoma in situ, and 15 (28.8%) invasive squamous cell carcinoma on histopathologic examination. Using i-scan-enhanced endoscopy, abnormal vascular change with neoplastic neoangiogenesis was detected in most cases of malignant VC lesion [severe dysplasia : 9/14 (64.3%), carcinoma in situ: 2/4 (50.0%), and invasive squamous cell carcinoma : 11/15 (73.4%)].
CONCLUSION
i-scan-enhanced endoscopy is a useful optical technique for the diagnosis of VC leukoplakia. Our results suggest that i-scan may be a promising diagnostic tool in the early detection of laryngeal cancer.

Keyword

Leukoplakia; Vocal cord; Carcinoma; Endoscopy

MeSH Terms

Carcinoma in Situ
Carcinoma, Squamous Cell
Diagnosis*
Diagnosis, Differential
Endoscopy*
Humans
Hyperplasia
Laryngeal Neoplasms
Larynx
Leukoplakia*
Mucous Membrane
Vocal Cords*