Concurrence of Rheumatoid Arthritis and Ankylosing Spondylitis: Analysis of Seven Cases and Literature Review

Table 3

Radiological, laboratory, and treatment characteristics.

	n = 81 (percentage)
Syndesmophytes (radiograph/MR/CT)	42/57 (73.68%)
Radiographic erosions	65/76 (85.52%)
Radiological sacroiliitis	80/81 (98.76%)
Positive RF	73/79 (92.40%)
Citrullinated peptide antibodies	16/18 (88.88%)
Positive HLA B-27	60/67 (89.55%)
Treatment
NSAIDs	28/47 (59.57%)
Corticosteroids	39/47 (82.97%)
Gold salts	12/47 (25.53%)
Hydroxychloroquine	9/47 (19.14%)
Sulfasalazine	9/47 (19.14%)
Methotrexate	15/47 (31.91%)
Leflunomide	4/47 (8.51%)
TNF-α-i	5/47 (10.63%)
Others	6/47 (12.76%)

CT: computerized tomography; MR: magnetic resonance, NSAIDs: nonsteroidal anti-inflammatory drugs; RF: rheumatoid factor; TNF-i: tumor necrosis factor inhibitor.