Sytse F Oudkerk1, Firdaus A A Mohamed Hoesein1, Willem PThM Mali1, F Cumhur Öner2, Jorrit-Jan Verlaan2, Pim A de Jong3, Gregory L Kinney4, John Hokanson4, David Lynch5, Edwin K Silverman6, Matthew J Budoff7, Elizabeth A Regan8. 1. University Medical Center Utrecht and Utrecht University, Department of Radiology and Nuclear Medicine, Utrecht, the Netherlands. 2. University Medical Center Utrecht, Department of Orthopedics, Utrecht, the Netherlands. 3. University Medical Center Utrecht and Utrecht University, Department of Radiology and Nuclear Medicine, Utrecht, the Netherlands. Electronic address: p.dejong-8@umcutrecht.nl. 4. Colorado School of Public Health, University of Colorado Denver, Department of Epidemiology, Denver, CO, USA. 5. National Jewish Health, Denver CO, Department of Radiology, Division of Oncology, Cancer Center, USA. 6. Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA. 7. Division of Cardiology, Los Angeles Biomedical Research Institute at Harbor-UCLA, Torrance, CA, USA. 8. National Jewish Health, Denver CO, Division of Rheumatology, USA.
Abstract
BACKGROUND AND AIMS: Diffuse idiopathic skeletal hyperostosis (DISH) is a common incidental finding on medical imaging and often thought to be benign. Our objective was to investigate whether DISH is associated with coronary artery disease as measured with the coronary artery calcification (CAC) score in a large cohort of current and former smokers. METHODS: In a subset of subjects from the COPDGene study, DISH was scored by a minimum of two independent readers if there were four adjacent levels of flowing osteophytes and a third reader adjudicated discrepancies. CAC was calculated using a modified Agatston method. Associations of DISH with the presence and extent of CAC were analyzed with and without adjustment for COPD and known atherosclerotic risk factors, including age, sex, race, diabetes, hypertension, high cholesterol, body mass index and smoking. RESULTS: DISH was present in 361 subjects (13.2%) from a total group of 2728. Median (interquartile range) Agatston was 81 (0-329) in DISH subjects compared to 0 (0-94 in subjects without DISH (p < 0.001). DISH prevalence was 8.8% in CAC = 0, 12.8% in CAC1-100, 20.0% in CAC100-400 and 24.7% in CAC.400. Subjects with DISH had a significantly higher risk of having coronary artery calcifications; OR [CI95%] 1.37[1.05-1.78] (p=0.019) after correction for age, gender, race, COPD and atherosclerotic risk factors. CONCLUSIONS: Subjects with DISH, a common musculoskeletal disorder involving bone formation anterior to the spine, have an increased burden of coronary artery disease, and therefore DISH may be a more relevant incidental finding than commonly thought.
BACKGROUND AND AIMS: Diffuse idiopathic skeletal hyperostosis (DISH) is a common incidental finding on medical imaging and often thought to be benign. Our objective was to investigate whether DISH is associated with coronary artery disease as measured with the coronary artery calcification (CAC) score in a large cohort of current and former smokers. METHODS: In a subset of subjects from the COPDGene study, DISH was scored by a minimum of two independent readers if there were four adjacent levels of flowing osteophytes and a third reader adjudicated discrepancies. CAC was calculated using a modified Agatston method. Associations of DISH with the presence and extent of CAC were analyzed with and without adjustment for COPD and known atherosclerotic risk factors, including age, sex, race, diabetes, hypertension, high cholesterol, body mass index and smoking. RESULTS: DISH was present in 361 subjects (13.2%) from a total group of 2728. Median (interquartile range) Agatston was 81 (0-329) in DISH subjects compared to 0 (0-94 in subjects without DISH (p < 0.001). DISH prevalence was 8.8% in CAC = 0, 12.8% in CAC1-100, 20.0% in CAC100-400 and 24.7% in CAC.400. Subjects with DISH had a significantly higher risk of having coronary artery calcifications; OR [CI95%] 1.37[1.05-1.78] (p=0.019) after correction for age, gender, race, COPD and atherosclerotic risk factors. CONCLUSIONS: Subjects with DISH, a common musculoskeletal disorder involving bone formation anterior to the spine, have an increased burden of coronary artery disease, and therefore DISH may be a more relevant incidental finding than commonly thought.
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