Camilla Slot Mehlum1, Stine Rosenkilde Larsen2, Katalin Kiss3, Aagot Moeller Groentved1, Thomas Kjaergaard4, Sören Möller5, Christian Godballe1. 1. Department of Otorhinolaryngology-Head and Neck Surgery, Odense University Hospital, University of Southern Denmark, Odense. 2. Department of Pathology, Odense University Hospital, University of Southern Denmark, Odense. 3. Department of Pathology, Copenhagen University Hospital, Copenhagen. 4. Department of Otorhinolaryngology-Head and Neck Surgery, Aarhus University Hospital, Aarhus, Denmark. 5. Odense Patient Data Explorative Network, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense.
Abstract
OBJECTIVE: The World Health Organization classification (WHOC) 2017 of low-grade versus high-grade laryngeal dysplasia recently replaced the previous WHOC 2005 of mild, moderate, and severe dysplasia and carcinoma in situ. Our objectives were to compare the interrater agreement of the WHOC 2017 with that of the WHOC 2005 and to test the intra-rater agreement of the WHOC 2005. METHODS: Two expert head and neck pathologists rated 211 tissue samples that were initially diagnosed with laryngeal precursor lesions. The samples were rated twice according to the WHOC 2005 and once according to the WHOC 2017; estimates of interrater and intrarater agreements were calculated with kappa statistics. RESULTS: The crude intrarater agreements using the WHOC 2005 were 0.93 for rater 1 and 0.62 for rater 2. The corresponding unweighted kappa values were 0.90 (95% confidence interval [CI], 0.86-0.95) for rater 1 and 0.43 (95% CI, 0.35-0.54) for rater 2, whereas the standard linear weighted kappa values were 0.93 (95% CI, 0.90-0.97) for rater 1 and 0.60 (95% CI, 0.53-0.69) for rater 2. The crude interrater agreement for the WHOC 2005 was 0.57, with a corresponding unweighted kappa value 0.38 (95% CI, 0.31-0.48) and a standard linear weighted kappa value 0.52 (95% CI, 0.42-0.60). The crude interrater agreement for the WHOC 2017 was 0.83, with a corresponding unweighted kappa value 0.45 (95% CI, 0.31-0.59) and a standard linear weighted kappa value 0.46 (95% CI, 0.30-0.60). CONCLUSION: Our results indicate difficulties in providing reliable diagnosis of laryngeal precursor lesions, even with experienced head and neck pathologists and the application of a newly revised classification system. LEVEL OF EVIDENCE: 4. Laryngoscope, 128:2375-2379, 2018.
OBJECTIVE: The World Health Organization classification (WHOC) 2017 of low-grade versus high-grade laryngeal dysplasia recently replaced the previous WHOC 2005 of mild, moderate, and severe dysplasia and carcinoma in situ. Our objectives were to compare the interrater agreement of the WHOC 2017 with that of the WHOC 2005 and to test the intra-rater agreement of the WHOC 2005. METHODS: Two expert head and neck pathologists rated 211 tissue samples that were initially diagnosed with laryngeal precursor lesions. The samples were rated twice according to the WHOC 2005 and once according to the WHOC 2017; estimates of interrater and intrarater agreements were calculated with kappa statistics. RESULTS: The crude intrarater agreements using the WHOC 2005 were 0.93 for rater 1 and 0.62 for rater 2. The corresponding unweighted kappa values were 0.90 (95% confidence interval [CI], 0.86-0.95) for rater 1 and 0.43 (95% CI, 0.35-0.54) for rater 2, whereas the standard linear weighted kappa values were 0.93 (95% CI, 0.90-0.97) for rater 1 and 0.60 (95% CI, 0.53-0.69) for rater 2. The crude interrater agreement for the WHOC 2005 was 0.57, with a corresponding unweighted kappa value 0.38 (95% CI, 0.31-0.48) and a standard linear weighted kappa value 0.52 (95% CI, 0.42-0.60). The crude interrater agreement for the WHOC 2017 was 0.83, with a corresponding unweighted kappa value 0.45 (95% CI, 0.31-0.59) and a standard linear weighted kappa value 0.46 (95% CI, 0.30-0.60). CONCLUSION: Our results indicate difficulties in providing reliable diagnosis of laryngeal precursor lesions, even with experienced head and neck pathologists and the application of a newly revised classification system. LEVEL OF EVIDENCE: 4. Laryngoscope, 128:2375-2379, 2018.
Authors: Henrik Hellquist; Alfio Ferlito; Antti A Mäkitie; Lester D R Thompson; Justin A Bishop; Abbas Agaimy; Juan C Hernandez-Prera; Douglas R Gnepp; Stefan M Willems; Pieter J Slootweg; Alessandra Rinaldo Journal: Adv Ther Date: 2020-04-23 Impact factor: 3.845
Authors: Hans Edmund Eckel; Ricard Simo; Miquel Quer; Edward Odell; Vinidh Paleri; Jens Peter Klussmann; Marc Remacle; Elisabeth Sjögren; Cesare Piazza Journal: Eur Arch Otorhinolaryngol Date: 2020-10-14 Impact factor: 2.503