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Table 1 Clinical, demographic and imaging characteristics of patients with new onset axial Spondyloarthritis after bariatric surgery

From: Axial Spondyloarthritis after bariatric surgery: a 7-year retrospective analysis

Patient characteristics (n = 9)
Sex (M:F) 4:5
Current age (years) 49.5 ± 10.1
Age at the onset of symptoms (years) 42.0 ± 9.1
Disease duration (years) 5.7 ± 3.0
Time between surgery and symptoms (months) 14.7 ± 18.0
White color 7 (77.8%)
HLA-B27 positive 8 (88.9%)
Chronic low back pain (> 3 months) 9 (100%)
Inflammatory low back pain 7 (77.8%)
Arthritis 5 (55.6%)
Calcaneal enthesitis 9 (100%)
Dactylitis 0 (0%)
Recurrent anterior uveitis 3 (33.3%)
Colitis 1 (11.1%)
Balanitis circinata/ urethritis 0 (0%)
Psoriasis 1 (11.1%)
Radiographic evidence of sacroiliitis (n = 9)
Grade II bilateral
Grade III unilateral or higher
5 (55.6%)
4 (80%)
1 (20%)
Sacroiliac Joint MRI* (n = 4) 4 (100%)
  1. Mean ± standard deviation, frequency (%). MRI: magnetic resonance imaging. *MRI was performed only in patients without radiographic sacroiliitis and was classified according to Assessment of Spondyloarthritis International Society (ASAS) criteria
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