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The prevalence of diffuse idiopathic skeletal hyperostosis in Korea
Seong-Kyu Kim1, Byung-Ryul Choi, Chae-Gi Kim
1The Hospital for Rheumatic Diseases, Department of Diagnostic Radiology, Hanyang University College of Medicine, Seoul, Korea.
Objective:
To identify the prevalence of diffuse idiopathic skeletal hyperostosis (DISH) in a large Asian population group.
Methods:
A total of 3595 subjects (1616 men and 1979 women) over 50 years of age, residing in 2 cities in Korea, were included in this study. The mean age of the study population was 64.25 +/- 9.06 years. We reviewed lateral chest radiographs through Picture Archiving and Communication Systems (PACS) and identified DISH according to Resnick's and Julkunen's criteria.
Results:
One hundred and four (2.9%) of the 3595 subjects were diagnosed with DISH according to classical Resnick criteria. A slight increase in prevalence (4.1%) could be seen using Julkunen's criteria. The prevalence of DISH increased with age, except for the 90-99 year age group. Men were approximately 7 times more likely to have DISH than women using Resnick's criteria.
Conclusion:
DISH is an age-related skeletal disorder whose overall prevalence is much lower in Koreans than in other Western populations. Interestingly, the prevalence of DISH was 7 times higher in men. We propose that ethnic factors are important elements in the prevalence of DISH.
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