Keywords

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

  • A 28-year-old patient

  • Familial history of SpA

  • Low back pain that worsens when sitting for a long time

  • Buttock pain

Fig. 1
figure 1

Coronal TSE T2-weighted sequence with fat saturation (a), coronal SE T1-weighted image with fat saturation following the administration of contrast medium (b). Note the massive bone marrow edema and intra-articular fluid (intra-articular hyperintensity) (a); contrast medium administration demonstrates symmetric massive acute inflammation of both joints (osteitis), in particular on the sacral side, and intra-articular enhancement (synovitis) (b)

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Follow-up after 13 months of TNF-blocker therapy

Fig. 2
figure 2

Coronal TSE T2-weighted image with fat saturation showing resolution of the inflammatory signs of both joints (absence of bone marrow edema)

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