Prevalence and anatomical distribution of MRI lesions in axSpA and differences between patients with and without peripheral involvement: results from the ASAS classification cohort.

ABSTRACT:

Objective

To evaluate the prevalence and anatomical distribution of inflammatory and structural MRI lesions in axial spondyloarthritis (axSpA) and compare these between patients with isolated axial involvement and those with peripheral manifestations.

Methods

Data from the Assessment of SpondyloArthritis International Society (ASAS) Classification Cohort were analysed. Peripheral involvement was defined as past or current arthritis/dactylitis/enthesitis. Sacroiliac joint (SIJ) and spinal MRI lesions typical of axSpA were classified per ASAS lesion definitions and centrally read with multi-reader majority agreement (lesion present if called by the majority; SIJ ≥4/7, spine ≥5/9 readers). Comparisons between patients with and without peripheral manifestations were made.

Res

SUBMITTER: Farisogullari B 

PROVIDER: S-EPMC12778281 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature