Laura L Wuyts1,2, Michael Camerlinck2, Didier De Surgeloose2, Liesbet Vermeiren2, David Ceulemans3, Johan Clukers1,4, Hans Slabbynck4. 1. Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium. 2. Department of Radiology, Middelheim Hospital ZNA, Lindendreef 1, 2020 Antwerp, Belgium. 3. Department of Electromechanics, CoSys-Lab, Faculty of Applied Engineering, University of Antwerp, Groenenborgerlaan 171, Antwerp, Belgium. 4. Department of Respiratory Medicine and Thoracic Oncology, Middelheim Hospital ZNA, Lindendreef 1, 2020 Antwerp, Belgium.
Abstract
OBJECTIVES: To determine whether the revised 2018 ATS/ERS/JRS/ALAT radiological criteria for usual interstitial pneumonia (UIP) provide better diagnostic agreement compared to the 2011 guidelines. METHODS: Cohort for this cross-sectional study (single center, nonacademic) was recruited from a multidisciplinary team discussion (MDD) from July 2010 until November 2018, with clinical suspicion of fibrosing interstitial lung disease (n= 325). Exclusion criteria were technical HRCT issues, known connective tissue disease (rheumatoid arthritis, systemic sclerosis, poly-or dermatomyositis), exposure to pulmonary toxins or lack of working diagnosis after MDD. Four readers with varying degrees in HRCT interpretation independently categorized 192 HRCTs, according to both the previous and current ATS/ERS/JRS/ALAT radiological criteria. An inter-rater variability analysis (Gwet's second-order agreement coefficient, AC2) was performed. RESULTS: The resulting Gwet's AC2 for the 2011 and 2018 ATS/ERS/JRS/ALAT radiological criteria is 0.62 (±0.05) and 0.65 (±0.05), respectively. We report only minor differences in agreement level among the readers. Distribution according to the 2011 guidelines is as follows: 57.3% 'UIP pattern', 24% 'possible UIP pattern', 18.8% 'inconsistent with UIP pattern' and for the 2018 guidelines: 59.6% 'UIP', 14.5% 'probable UIP', 15.9% 'indeterminate for UIP' and 10% 'alternative diagnosis'. CONCLUSIONS: No statistically significant higher degree of diagnostic agreement is observed when applying the revised 2018 ATS/ERS/JRS/ALAT radiological criteria for UIP compared to those of 2011. The inter-rater variability for categorizing the HRCT patterns is moderate for both classification systems, independent of experience in HRCT interpretation. The major advantage of the current guidelines is the better subdivision in the categories with a lower diagnostic certainty for UIP. ADVANCES IN KNOWLEDGE: - In 2018, a revision of the 2011 ATS/ERS/JRS/ALAT radiological criteria for UIP was published, part of diagnostic guidelines for idiopathic pulmonary fibrosis.- The inter-rater agreement among radiologist is moderate for both classification systems, without a significantly higher degree of agreement when applying the revised radiological criteria.
OBJECTIVES: To determine whether the revised 2018 ATS/ERS/JRS/ALAT radiological criteria for usual interstitial pneumonia (UIP) provide better diagnostic agreement compared to the 2011 guidelines. METHODS: Cohort for this cross-sectional study (single center, nonacademic) was recruited from a multidisciplinary team discussion (MDD) from July 2010 until November 2018, with clinical suspicion of fibrosing interstitial lung disease (n= 325). Exclusion criteria were technical HRCT issues, known connective tissue disease (rheumatoid arthritis, systemic sclerosis, poly-or dermatomyositis), exposure to pulmonary toxins or lack of working diagnosis after MDD. Four readers with varying degrees in HRCT interpretation independently categorized 192 HRCTs, according to both the previous and current ATS/ERS/JRS/ALAT radiological criteria. An inter-rater variability analysis (Gwet's second-order agreement coefficient, AC2) was performed. RESULTS: The resulting Gwet's AC2 for the 2011 and 2018 ATS/ERS/JRS/ALAT radiological criteria is 0.62 (±0.05) and 0.65 (±0.05), respectively. We report only minor differences in agreement level among the readers. Distribution according to the 2011 guidelines is as follows: 57.3% 'UIP pattern', 24% 'possible UIP pattern', 18.8% 'inconsistent with UIP pattern' and for the 2018 guidelines: 59.6% 'UIP', 14.5% 'probable UIP', 15.9% 'indeterminate for UIP' and 10% 'alternative diagnosis'. CONCLUSIONS: No statistically significant higher degree of diagnostic agreement is observed when applying the revised 2018 ATS/ERS/JRS/ALAT radiological criteria for UIP compared to those of 2011. The inter-rater variability for categorizing the HRCT patterns is moderate for both classification systems, independent of experience in HRCT interpretation. The major advantage of the current guidelines is the better subdivision in the categories with a lower diagnostic certainty for UIP. ADVANCES IN KNOWLEDGE: - In 2018, a revision of the 2011 ATS/ERS/JRS/ALAT radiological criteria for UIP was published, part of diagnostic guidelines for idiopathic pulmonary fibrosis.- The inter-rater agreement among radiologist is moderate for both classification systems, without a significantly higher degree of agreement when applying the revised radiological criteria.
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