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Validation of the European Laryngological Society classification of glottic vascular changes as seen by narrow band imaging in the optical biopsy setting

Francesco Missale, Stefano Taboni, Andrea Luigi Camillo Carobbio, Francesco Mazzola, Giulia Berretti, Andrea Iandelli, Marco Fragale, Francesco Mora, Alberto Paderno, Francesca Del Bon, Giampiero Parrinello, Alberto Deganello (+2 others)
2021 European Archives of Oto-Rhino-Laryngology  

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Purpose In 2016, the European Laryngological Society (ELS) proposed a classification for vascular changes occurring in glottic lesions as visible by narrow band imaging (NBI), based on the dichotomic distinction between longitudinal vessels (not suspicious) and perpendicular ones (suspicious). The aim of our study was to validate this classification assessing the interobserver agreement and diagnostic test performance in detecting the final histopathology. Methods A retrospective study was
more » ... ed out by reviewing clinical charts, preoperative videos, and final pathologic diagnosis of patients submitted to transoral microsurgery for laryngeal lesions in two Italian referral centers. In each institution, two physicians, independently re-assessed each case applying the ELS classification. Results The cohort was composed of 707 patients. The pathologic report showed benign lesions in 208 (29.5%) cases, papillomatosis in 34 (4.8%), squamous intraepithelial neoplasia (SIN) up to carcinoma in situ in 200 (28.2%), and squamous cell carcinoma (SCC) in 265 (37.5%). The interobserver agreement was extremely high in both institutions (k = 0.954, p < 0.001 and k = 0.880, p < 0.001). Considering the diagnostic performance for identification of at least SIN or SCC, the sensitivity was 0.804 and 0.902, the specificity 0.793 and 0.581, the positive predictive value 0.882 and 0.564, and the negative predictive value 0.678 and 0.908, respectively. Conclusion The ELS classification for NBI vascular changes of glottic lesions is a highly reliable tool whose systematic use allows a better diagnostic evaluation of suspicious laryngeal lesions, reliably distinguishing benign ones from those with a diagnosis of papillomatosis, SIN or SCC, thus paving the way towards confirmation of the optical biopsy concept.
doi:10.1007/s00405-021-06723-7 pmid:33710441 fatcat:p5vu7rnctnez5hap5hwfzl5zdq
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Francesco Missale, Stefano Taboni, Andrea Luigi Camillo Carobbio, Francesco Mazzola, Giulia Berretti, Andrea Iandelli, Marco Fragale, Francesco Mora, Alberto Paderno, Francesca Del Bon, Giampiero Parrinello, Alberto Deganello, Cesare Piazza, Giorgio Peretti. "Validation of the European Laryngological Society classification of glottic vascular changes as seen by narrow band imaging in the optical biopsy setting." European Archives of Oto-Rhino-Laryngology 278.7 (2021)