Diagnosing axial SpA by multidisciplinary team conference in a cohort of patients with disease features according to the ASAS criteria

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Introduction. In 2009 MRI was included in the Assessment of SpondyloArthrtitis Society (ASAS) classification criteria and have often been used clinically resulting in a risk of overdiagnosis. The aim of the study was to estimate the prevalence of axial spondyloarthritis (axSpA) in a cohort of clinical patients with low back pain and imaging or biochemical findings suggestive of axSpA using multidisciplinary team (MDT) conferences.

Methods. In 84 patients fulfilling or nearly fulfilling the ASAS criteria, clinical, biochemical and MRI findings at baseline and after 3.5 years were retrospectively evaluated at MDT conferences attended by radiologists and rheumatologists, and MDT consensus diagnoses regarding axSpA were established.

Results. According to the MDT consensus, 25 (30%) of the patients had axSpA at follow-up; 40% and 37% of the individuals, who fulfilled the ASAS criteria at baseline and at follow-up, respectively, had axSpA.
According to the MDT consensus 96% of the patients with axSpA met the ASAS criteria at baseline and 92% at follow-up, respectively.

Conclusions. Approximately one-third of the included patients had axSpA when evaluated at a MDT conference. The ASAS criteria had a low predictive value, but high sensitivity for axSpA, both at baseline and at follow-up. The results emphasize the importance of not using classification criteria as diagnostic criteria.
Original languageDanish
Publication year15 Jul 2021
Publication statusPublished - 15 Jul 2021
Event12th International Congress on Spondyloarthritides - Belgium, Gent
Duration: 9 Sep 202111 Sep 2021

Conference

Conference12th International Congress on Spondyloarthritides
LocationBelgium
CityGent
Period09/09/202111/09/2021

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